Nina's Reading Blog

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Archive for the ‘Science’ Category

The Poison Squad: One Chemist’s Single-minded Crusade for Food Safety at the Turn of the Twentieth Century

Posted by nliakos on November 15, 2018

by Deborah Blum  (Penguin 2018)

The “one chemist” of the title is consumer advocacy pioneer Dr. Harvey Washington Wiley, who headed up the Bureau of Chemistry at the Department of Agriculture from 1882 to 1912. Wiley fought to protect American consumers from mislabeled, adulterated, dangerous foods and medicines for his entire adult life. But The Poison Squad is not just about Wiley; it is also the story of his many allies (e.g., Willard Bigelow, lead chemist for Wiley’s early research into common food additives like sodium benzoate; and Henry J. Heinz of ketchup fame, who was an early advocate of preservative-free foods) and enemies (e.g., John Queeny, founder of Monsanto and a staunch defender of the unlabeled use of saccharin in food; and James Wilson, Secretary of Agriculture and Wiley’s boss, who often caved to industrial demands and suppressed Wiley’s findings and reports). (Blum helpfully provides a 9-page alphabetical cast of characters at the beginning of the book–I wish that all non-fiction writers did the same!) Scientists and journalists, novelists and cookbook authors, politicians and suffragists and consumer advocates on the one side, and industrialists, bureaucrats, different politicians and even presidents on the other–a great battle was waged for many years over the regulation of America’s food and drug supply. Interestingly from our perspective, around the turn of the 20th century, Democratic and Republican roles were reversed. The Democrats were the bad guys, supporting industry demands to be able to freely adulterate foods to cheapen production and increase profits, while the (progressive) Republicans were on the side of consumer safety.

Though the politics has changed, that battle continues today. Just one example is saccharin, one of the deleterious additives targeted by Wiley a century ago, which is still readily available on supermarket shelves now despite the finding that it “has a physiologic effect . . . in every place, in every cell.” (It was briefly banned in the 1980s but was unbanned in 2000.) Despite convincing scientific evidence, the food industry has continued to fight for the right to poison the public, as long as it increases their profit margin.

Wiley focused both on banning harmful substances in food, drinks, and medicines, and on truthful, complete labeling and advertising, so that consumers could know what they were buying and ingesting. He was also a dedicated feminist. He married late in life (not for lack of trying, but his wife, Anna Kelton, refused him when he first proposed, when she was in her late twenties and he about twice that). He was an enthusiastic supporter of his wife’s political activism in the suffragist movement. (Favorite quote, when Anna was arrested and jailed for political activity: “He had fought all his life for a principle and hardly could deny her the same privilege.”

Wiley was uncompromising in his zeal to clean up the food supply and get rid of false claims about medicinal properties. Time and time again, he courageously stood up to his boss (and to his boss’s boss, the President) and to his numerous detractors and opponents. One cannot help but admire him.

Reading about the long years of struggle before the first Pure Food and Drug Act (1906) and the ensuing struggle over writing and enforcing the regulations, I was reminded of the seemingly never-ending struggle for gun control legislation. The National Rifle Association plays the role of the food industry executives who shamelessly attacked those who were trying to protect the public. Organizations like MomsRising and Every Town for Gun Safety and individuals like Jim Brady and Gabby Giffords and the Marjorie Stoneman Douglas students play the roles of Harvey Wiley, Alice Lakey, Sinclair Lewis, Lincoln Steffens and so many others who refused to admit defeat despite numerous losses. The only way to combat this incessant greed, it would seem, is to persist, no matter how long it takes. Once the legislative battle is won, however imperfectly, we must gear up for the regulatory battle. And with Donald Trump in the White House, even regulations that have long been in place to protect consumers are being rolled back to the detriment of consumer safety and to the delight of the  industrialists (such as gun manufacturers and food/beverage/drug industry tycoons). The fight against the food and drug industries is never over, as Blum shows in her Epilogue. We must be forever vigilant.

This book is a fascinating and educational read. I highly recommend it, but I would advise you not to read it over lunch!


Posted in Biography, History, Science | Tagged: , , | Leave a Comment »

The Selfish Gene

Posted by nliakos on November 3, 2018

by Richard Dawkins (Oxford Univ. Press; originally published 1976; 40th Anniversary edition ed. 2016)

This one is a Darwinian classic and has been on my list for many, many years. It is pretty dense and long but is written in a very clear way, avoiding mathematical and scientific terms (or explaining them over and over). The basic premise is that natural selection works not at the level of the organism but at the level of the gene, which replicates itself endlessly so that any gene, at any moment, is present in many (billions? trillions?) organisms. Genes are “selfish”; that is to say, their goal, if they can be said to have a goal (they can’t, really) is to survive, at the expense of (or with the cooperation of, if that works better) their fellow genes. Individual organisms such as plants, fungi, or animals, including humans, are the “vehicles” or “survival machines” which the genes build to carry themselves into the future.

Ch. 1, “Why Are People?” Dawkins introduces the book by saying it is a statement of his belief of how living things evolved. It is not about morality, and it does not describe particular animal or human behaviors in detail. The concepts of selfishness and altruism, which are central to the book, are introduced.

Ch. 2, “The Replicators” A quick and dirty explanation of DNA, chromosomes, and genes. I’ve always been confused about whether chromosomes are parts of genes or vice versa (it’s vice versa). Errors during replication (i.e., mutations) lead to natural selection.

Ch. 3, “Immortal Coils” More about the replicators, basically, adding the concepts of  nucleotides and cistrons (smaller bits than in the previous chapter, if I am not mistaken), as well as the concept of crossing over, which means swapping chromosomal bits. A gene is defined as “any portion of chromosomal material that potentially lasts for enough generations to serve as a unit of natural selection.” These two chapters are the toughest for the non-scientist reader.

Ch. 4, “The Gene Machine” Working up in size to animals, the vehicles for genetic transmission and survival. Behavior is “a trick of rapid movement”. Muscles are “gadgets to achieve rapid behavior”. Neurones (nerve cells) time movements. Communication is simply a type of behavior controlled by neurones. Astonishing fact: An axon is a long wire-like part of a nerve cell that, while microscopically tiny in width, can be as long as the neck of a giraffe!

Ch. 5, “Aggression: Stability and the Selfish Machine  The crucial concept of the Evolutionarily Stable Strategy or ESS: a strategy that, if adopted by most members of a population, proves superior to other strategies. Natural selection penalizes deviation from the ESS, which results in stable polymorphism, or an equilibrium of varied types in the gene pool. Addresses the issues of rivalry (and why animal rivals usually do not fight to the death), retaliation (behavior dependent on that of one’s opponent), and territorial defense.

Ch. 6, “Genesmanship” Reminder that a gene is not a single bit of DNA but all the replicas of that bit of DNA, wherever they are found (i.e., in whichever bodies they are “sitting”). Altruism can result from selfishness due to shared genes. (W. D. Hamilton calculated the probability of shared genes in a population.) Some altruistic behaviors, e.g., parental care, are advantageous to survival. (An animal must survive long enough to reproduce and must have lots of offspring for genes to be successful.)

Ch. 7, “Family Planning”  Bearing offspring and caring for them are separate behaviors. Most animals regulate their birthrates, and genes for the optimal number of young will eventually win out over genes for too few or too many young. In territorial animals, control of a territory can grant males “permission” to breed. Males without territories may never breed. Some attention is given to the problem of human over-population: leaders who forbid effective contraceptive methods “express a preference for ‘natural’ methods of population limitation, and a natural method is exactly what they are going to get. It is called starvation.”

Ch. 8, “Battle of the Generations”  “Parental Investment” (R. L. Trivers), or more accurately, “Altruism Investment” (Dawkins) refers to how many life resources an animal will invest in its young or other members of its family or group. Some young are better risks for a parent to invest in than others (e.g., runts). Addresses the issues of sibling rivalry (including fratricide) and parasitic bird behavior like cuckoos laying their eggs in the nests of other birds. Discusses how offspring may (unconsciously) manipulate their parents, forcing them to feed them by screaming, which attracts predators to the nest. Dawkins points out that altruism must be taught, as it does not come naturally.

Ch. 9, “Battle of the Sexes”  Mated pairs may cooperate to raise young, but they are naturally inclined to try to exploit one another. It is common for one parent to leave the other to raise the young, and whereas with animals that breed by copulating it is usually the male that runs off, leaving the female to bring up the young, with water-dwelling animals where the male fertilizes the eggs once they are released into the water, it is often the female who skips town, leaving the male to care for the young. It depends on who has the first opportunity to escape.

Animals where parents share the burden do so in response to genetic programming that has been determined to lead to a more successful outcome. In this case, females often try to spot signs that a potential mate will be faithful or not before they consent to mate. Different strategies for choosing a mate: “domestic bliss” or “he-man”. Females can be coy or fast, while males can be faithful or philanderers. Characteristics like the heavy tail of a bird of paradise or a peacock can demonstrate to a female that the male is strong enough to survive despite dragging around all that extra stuff behind him. What makes one animal male and the other female? It boils down to the gametes (sex cells): female gametes are larger (because they contain nutrition to feed the embryo) and fewer, while male gametes are tiny, more numerous, and faster. The optimal sex ratio is 50:50.

Ch. 10, “You Scratch My Back, I’ll Ride on Yours”  Interactions between different species or members of a population, including alarm calls and how they probably develop in a population of prey animals, and symbiosis, such as slave-holding, aphid-milking, and fungus-gardening ants, kamikaze bees, and grooming behaviors.

Ch. 11, “Memes: The New Replicators”  It turns out that Dawkins coined this popular term in this book. A meme is an element of human culture which can spread through a population just as a gene can. Memes can be pieces of language, music,  fashion, ways of making things, etc. God is a meme. (The musical oeuvre of Johann Sebastian Bach would constitute a “meme-complex”.) Memes replicate through imitation and are passed on in altered form, continuously mutating and blending. They can replicate much faster than genes.

Ch. 12, “Nice Guys Finish First”  Finally, the role of altruism in the success of certain genes. Dawkins uses Game Theory to explain that animals cooperate with each other because cooperation (“niceness”, “forgiveness”) leads to a more stable survival strategy. A group of strategies called Tit for Tat (only defect in retaliation for another’s defection; if the other cooperates, you cooperate as well) is the most stable of all. Dawkins has plenty of animal and also human examples of how this works, even using it to explain the cooperation between Allied and Axis troops during World War I (the famous Silent Night in the trenches being only one example).

Ch. 13, “The Long Reach of the Gene”  I suppose that this chapter was not part of the original publication, because Dawkins explains that it summarizes another book he wrote called The Extended Phenotype (1982). A phenotype is a physical manifestation of a gene, like eye color, skin color, or (I suppose) a propensity to do well in mathematics (just conjecture here). The idea is that genes can influence things beyond the body they are in; for example, a beaver is programmed by its genes to build dams, thus transforming its environment. The beautiful stone “houses” that the larvae of the caddis fly construct to protect their soft bodies are another example, as are, I suppose, the constructed landscape that humans build for themselves.

Dawkins also addresses the questions of why genes teamed up in cells, why cells teamed up in multi-cellular organisms, and most interestingly, why the lives of multi-celled animals begin and end with a single cell, a fertilized egg (a “bottle-necked” lifestyle). As Dawkins writes, “Really, I’d almost rather you stopped reading now and switched to The Extended Phenotype!”

Epilogue to Fortieth Anniversary Edition  Dawkins considers whether he would make major changes to The Selfish Gene and concludes that, except for a less inflammatory title (he suggests The Immortal Gene might have been better received and is also more poetic), he would not; current knowledge of gene structure presents no challenge to his ideas as long as his definition of gene is understood (Cf. Ch. 3).

Posted in Non-fiction, Science | Tagged: , , | Leave a Comment »

Love, Life, and Elephants: An African Love Story

Posted by nliakos on July 25, 2018

by Dame Daphne Sheldrick (Farrar, Straus and Giroux, 2012)

I had never heard of Dame Daphne nor of the David Sheldrick Wildlife Trust, but apparently, in the community of advocates for African wildlife (and in particular, elephants and rhinos), they are very well known. Following a harrowing accident when she failed to recognize one of “her” grown-up orphan elephants and instead got too familiar with a wild elephant, Dame Daphne decided to write her memoirs: “This will be my legacy. I will set down everything I have learned in my efforts to contribute to the conservation, preservation and protection of wildlife in this magical land.”

A native white Kenyan (her grandparents immigrated from South Africa, though her family originated in Scotland), Daphne grew up on a farm where she already showed an inclination to love and care for the wild animals that were so numerous, in addition to the dogs and cats and other domesticated animals on the farm. At seventeen, she married a man who worked for the Kenyan National Parks as an assistant warden. His assignment to Tsavo National Park put Daphne in close contact with Park Warden David Sheldrick, who was to become her second husband and soulmate.

For me, by far the most interesting parts of the narrative, however, are the parts about the many orphaned animals that Dame Daphne (with her husbands’ and daughters’ help) rescued and returned successfully to the wild. I think it is well known that wild animals who are reared by humans have a hard time surviving with their own kind in the wild; many never make it. But Dame Daphne’s orphans, time and time again, given the freedom to decide when and how they would rejoin their wild cousins (with some limitations due to age), were almost always able to reintegrate successfully (although they were of course subject to the same dangers and risks as their wild cousins once they had reintegrated). One important factor in this success for the many elephant orphans she raised is that when they were no longer dependent on milk, they were given over to the care and tutelage of the elephant cow Eleanor, herself a former orphan, who raised and returned so many orphans to the wild that I lost count.

Along the way, Dame Daphne was the first person to figure out what kind of formula could be used to save infant elephants. She also raised many other kinds of orphaned animals, including rhinos, warthogs, and many different types of antelopes, from the tiny dikdiks to elands and kudu. Amazingly, Eleanor accepted all of these different animals into her motley family. A lot of cross-species friendships were formed–not only humans with wild animals, but rhinos with zebras and water buffalo, antelopes with elephants, and more. There are photos showing Dame Daphne’s young daughters feeding the orphans and riding on a rhino. She tells of welcoming the orphans into her house and sometimes actually in her bed! Having believed all my life that wild animals can never be trusted, I was astonished at how gentle these animals were with Sheldrick and with her children (although they were often mischievous, especially when they were young). Her deep love for all animals and the special bonds she cultivated with her elephants are a joy to read about. Elephants are amazingly similar to humans in so many ways, especially when it comes to their emotional lives. They seem to lack our penchant for violence, though–at least among their own kind.

In addition, she explains the Mau Mau revolution in Kenya in the fifties, the issues related to Kenyan independence in the sixties (included the impact on the National Park system), and the ongoing fight to save African wildlife from poaching. An absolutely fascinating read.

Update: I googled Dame Daphne Sheldrick and discovered to my sadness that she passed away only a few months ago, on April 12, 2018. I also found this documentary, which tells the story of both Dame Daphne and her elephants and of Birute Galdikas and the orphaned orangutans that she raises in Borneo. Unfortunately, the video is full of annoying ads, but if you can ignore them, it’s really interesting to watch.

Posted in Autobiography, History, Non-fiction, Science | Tagged: , , , | Leave a Comment »

How We Got to Now: Six Innovations That Made the Modern World

Posted by nliakos on June 2, 2017

by Steven Johnson (Riverhead Books 2014)

This is the companion book to the PBS/BBC collaborative series of the same name. I missed that back in 2014, but I’m inspired to watch it now, because the book was really interesting. It shows, for example, how the discovery of the special properties of silicon dioxide led to the invention of window glass, eyeglasses, mirrors, microscopes, telescopes, fiberglass, even the World Wide Web. Johnson writes that when we snap a selfie and upload it to the Internet, we usually don’t think of “the way glass supports this entire network: we take pictures with glass lenses, store and manipulate them on circuit boards made of fiberglass, transmit them around the world via glass cables, and enjoy them on screens made of glass. It’s silicon dioxide all the way down the chain.”

And that’s just Chapter 1! In addition to Glass, Johnson has chapters dedicated to Cold, Sound, Clean, Time, and Light.  In each chapter, he follows the development of concepts and technologies related to the theme. He explains how most new technologies are invented by several people working at similar times (“in clusters of simultaneous discovery”), and that inventions are developed on the backs of previous ones.  He discusses the concept of the adjacent possible, a kind of discovery zone of possibilities that is normally present when an innovation is being incubated; without it, the innovation would be unthinkable. And he connects the dots to show us how each innovation clears the way for further innovations, like how solving the problems of waste disposal and clean water made possible the existence of mega-cities (which are not necessarily a good thing, but that’s another issue).

In the final chapter, “The Time Travelers”, Johnson introduces us to some exceptions to the ideas of simultaneous inventions and the adjacent possible: Charles Babbage, who essentially invented the computer in the 19th century, and his younger friend Ada Lovelace, who saw in Babbage’s invention the possibility of its uses beyond mathematics. Johnson writes in awe, “To have this imaginative leap in the middle of the nineteenth century is almost beyond comprehension. It was hard enough to wrap one’s mind around the idea of programmable computers–almost all of Babbage’s contemporaries failed to grasp what he had invented–but somehow, Ada was able to take the concept one step further, to the idea that this machine might also conjure up language and art. That one footnote opened up a conceptual space that would eventually be occupied by so much of early twenty-first-century culture: Google queries, electronic music, iTunes, hypertext. The computer would not just be an unusually flexible calculator; it would be an expressive, representational, even aesthetic machine.” Then he points out that when the time was finally ripe for this to actually happen, no one would remember either Babbage’s Analytical Engine or Lovelace’s vision of how it might be used, and they had to be re-invented by others.

A fascinating book for both science and history buffs! I am looking forward to watching the series.

Posted in History, Non-fiction, Science | Tagged: , , , , , , | Leave a Comment »

E.M.D.R.: The Breakthrough “Eye Movement” Therapy for Overcoming Anxiety, Stress, and Trauma

Posted by nliakos on April 21, 2017

by Francine Shapiro, Ph.D. & Margot Silk Forrest (Basic Books 1997, 2004)

EMDR stands for “Eye Movement Desensitization and Reprocessing”.  The author, Francine Shapiro, “discovered” this technique and has developed it into a technique used by thousands of therapists around the world. I had never heard of it, but then, I am not a psychologist. The therapy consists of various parts and is performed only by people who have been specially trained in the techniques. The eponymous Eye Movement part refers to having the patient follow the therapist’s hand or (sometimes) a tapping noise (if the patient is very young or blind, for example) in a regular movement that mimics in certain ways the “Rapid Eye Movements” of REM sleep. Put very simply, Shapiro speculates that these rapid eye movements enable people to process memories normally. When a person “gets stuck” on a memory (as can happen if s/he experiences trauma, either large or small), the memory is not processed, or is incompletely processed, and haunts the person by way of flashbacks, nightmares, or even seemingly irrational behaviors. Directing the patient to remember the trauma while moving his/her eyes in a particular way seems to permit the “reprocessing” of the unprocessed memory, with a resulting desensitization; i.e., the patient is no longer bothered by the memory.

The many case histories were both heart-breaking and fascinating. EMDR is shown to have healed and/or helped people with PTSD; victims of rape, child abuse, phobias, and night terrors; the terminally ill; substance abusers and addicts; people mourning the loss of a loved one. . . . pretty much everyone you can think of, which is where my initial enthusiasm turned to suspicion. If EMDR is so effective in so many situations, why isn’t it a household word? Why isn’t it being used more widely? I want to believe that it is as effective as Shapiro claims, but it just seems to be too good to be true. Must investigate further!

Posted in Non-fiction, Science | Tagged: , , , | 1 Comment »

Body of Work: Meditations on Mortality from the Human Anatomy Lab

Posted by nliakos on December 31, 2016

by Christine Montross (Penguin 2007)

This book has been on my to-read list for years, possibly since it was published, but I could never find it. Finally, I bought a used copy. It was worth the wait. Christine Montross was a resident in psychiatry when the book came out; she based it on the journal that she kept during her first semester in medical school, when medical students study human anatomy by dissecting a human cadaver which has been donated for the purpose.

Montross describes the dissection and the feelings engendered by it; she adds a dose of history when she travels to Padua to visit the theater when the father of modern anatomy, Andreas Vesalius, essentially began the practice of cadaver dissection for medical students; she explains that without donated cadavers, doctors and students used the bodies of executed criminals or bought cadavers which had been dug up at night, in secret–and sometimes actually did the grave-robbing themselves. But she remains convinced that no other method can replace actual dissection, saying that the woman whose body she essentially destroyed during that semester in anatomy lab gave her a precious gift: “. . . She neither knew me nor knew anything about me, and yet she bequeathed to me this offering, unthinkable for centuries, that has formed the foundations of my ability to heal. My hours with her neither cured her nor eased her suffering. Bit by bit, I cut apart and dismantled her, a beautiful old woman who came to me whole. The lessons her body taught me are of critical importance to my knowledge of medicine, but her selfless gesture of donation will be my lasting example of how much it is possible to give to a total stranger in the hopes of healing.”

The last part of the cadaver to be dissected is the head and brain. Despite their progress in with the emotional component of cutting up the body of a stranger, Montross and her classmates find it extraordinarily difficult to dissect their cadavers’ faces and heads. Montross writes, “The brain is the true embodiment of my own conflicted response to anatomy. Somewhere deep within its crenellations, here lies wonder, and here lies the question of whether we have a right to pursue wonder in seemingly inhuman ways. Here is the knowledge gained by dissection, which drives our actions forward, and here lies the toll the process takes on each of us, in stress or dreams or dissonance. Here in the brain is the newly transformed identity of the doctor-to-be, with a beginner’s knowledge of disease and healing, with a stomach more steeled to trauma and to death. But somewhere, too, there must be the echo of the person who existed before cutting a human body, before feeling the cool stiffness of a pulseless heart.” Montross’ prose is exquisite; I was not surprised to learn that she is a published poet as well as a doctor.

I don’t know why it was so hard to find this book, because I think every doctor in training should read it (probably before they take anatomy lab).

Posted in Memoir, Science | Tagged: , , | 2 Comments »

The Violinist’s Thumb (And Other Lost Tales of Love, War, and Genius, as Written by Our Genetic Code)

Posted by nliakos on August 13, 2016

by Sam Kean (Little, Brown & Co. 2012; ISBN 978-0-316-18231-7)

What with house guests and several other books, it took me over two months to finish this, which may explain why I remain confused about the roles of and differences between genes, chromosomes, and DNA in our genetic makeup; or maybe it’s just confusing stuff. Sam Kean writes about the history of genetics (important figures like Gregor Mendel, Baron Cuvier, and Craig Venter) as well as the science itself and what we can learn from it. Regrettably, I don’t remember the details! Kean’s style is conversational, slangy, and rather tongue-in-cheek.

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Incognito: The Secret Lives of the Brain

Posted by nliakos on June 20, 2016

by David Eagleman (Pantheon 2011; ISBN 978-0-307-37733-3)

In this excellent book, neuroscientist David Eagleman explores the question of who we really are, given that the conscious part of our brain is but a small part of the whole. He writes, “Your consciousness is like a tiny stowaway on a transatlantic steamship, taking credit for the journey without acknowledging the massive engineering underfoot.” (p. 4)

That “massive engineering underfoot” not only runs our physical bodies (digestion, vision, reproduction, etc.) but also influences our conscious decisions in multiple ways, impacting who we are attracted to, what we choose to eat, what thoughts and ideas we have–pretty much everything, actually. As Eagleman writes, “Almost the entirety of what happens in your mental life is not under your conscious control.” (p. 8)

He likens this realization to the “dethroning” of the earth as the center of the universe and the “dethroning” of humankind as the apotheosis of creation or evolution, yet he stops short of espousing materialism and reductionism–the assumption that everything about us can be explained by understanding our physical components (the “break-it-down-to-the-smallest-bits approach”). He keeps an open mind and urges his readers to do likewise.

The book begins with a retrospective of our understanding of the role of the brain (“There’s Someone in My Head, But It’s Not Me”), continues with an exploration of sensory perception with an emphasis on vision (“The Testimony of the Senses”), and goes on to examine the automaticity of habitual actions, like changing lanes while driving, as well as the hidden preferences behind racism, mate selection, career choice, and more (“Mind: the Gap”).

In “The Kinds of Thoughts That Are Thinkable”, Eagleman examines the limitations placed by our biology on our experience of the world and our ability to interpret it, and considers how one person’s perception can differ from the next person’s–if she is a synesthete, for instance, Tuesday might be magenta to her. Next, he explores the question of whether there is a true self and concludes that there is probably not, in “The Brain Is a Team of Rivals”; to quote Walt Whitman, we “contain multitudes”, which explains our self-contradictory behavior. This chapter also considers the concept of being angry with oneself, making a deal with oneself, being ashamed of oneself, etc. Who is angry at whom?

“Why Blameworthiness Is the Wrong Question” advocates for a justice system that stops exacting retribution for criminal acts and instead metes out sentences based on the modifiability of the criminal’s behavior and the prevention of future crime. Finally, “Life After the Monarchy” (remember “dethroning”?) sums up the book’s themes and posits that one can be more than just the sum of one’s parts. Eagleman presents a strong case that the answer to the “nature or nurture?” question is usually “both”, or in his words, “The future of understanding the mind lies in deciphering the patterns of activity that live on top of the wetware, patterns that are directed both by internal machinations and by interactions from the surrounding world.” (pp. 219-220)  (I love the term wetware for the human brain!)

It’s a very interesting, readable, and thought-provoking book.


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Brain Maker: The Power of Gut Microbes to Heal and Protect Your Brain–for Life

Posted by nliakos on December 5, 2015

by David Perlmutter, M.D. with Kristin Loberg (Little, Brown & Co. 2015; ISBN 978-0-316-38010-2)

Dr. David Perlmutter is a Florida neurologist, and he believes that much of what is wrong with us can be solved by bringing our microbiome–the “bugs” or bacteria that inhabit our digestive tract–into balance and keeping it healthy. Our unnatural diet and toxic environment, he thinks, are responsible for our sick and unbalanced microbiomes.

In Part I, “Getting to Know Your Hundred Trillion Friends,” he explains about the microbes that live within us, digest our food for us, and determine how we feel, and how much we weigh. In addition, he explains “the new science of inflammation”–how inflammation within our bodies resulting from out-of-balance microbiota can make us sick–and the apparent relationship of a sick microbiome with autism.

Part II, “Trouble in Bugville,” focuses on how our gut microbiota get sick and unbalanced when exposed to too much fructose (like HFCS), gluten, antibiotics, environmental chemicals, and genetically modified foods such as corn and soy.

Part III, “Brain Maker Rehab,” Dr. Perlmutter explains how we can cure our sick microbiome through changing what we eat, taking certain supplements, and avoiding certain environmental hazards. For example, he recommends eating more fermented foods like yogurt, kimchi, pickled vegetables and meats, and kombucha tea, and filtering drinking water. He recommends taking docosahexaenoic acid (DHA), turmeric, coconut oil, alpha-lipoic acid, and Vitamin D as well as the following five probiotics: Lactobacillus platarum, Lactobacillus acidophilus, Lactobacillus brevis, Bifidobacterium lactis, and Bifidobacterium longum. He includes a seven-day cleansing and eating program as an example, and offers recipes for recommended foods such as sauerkraut, kimchi, pickled sardines, fermented hard-boiled eggs, and kombucha tea. This was where he kind of lost me. I have been a vegetarian for over forty years, and I certainly do not intend to start eating meat or fish, fermented or not. And many of the recipes require sterilization of glass jars and lids. Never having canned anything, I have no experience with or equipment for sterilizing foods. It may be easy, but I worry that if I don’t do it properly, I could make myself sick.

I would prefer slowly decreasing certain foods and exposures while increasing others, but Dr. Perlmutter seems to want a complete makeover of lifestyle and diet. Perhaps he recommends this out of concern for his readers’ well-being; for me, it just makes it less likely that I will make changes at all. If one inflexibly implemented all of these changes, one could kiss eating out and entertaining friends goodbye.

Perlmutter’s claims seem logical and well-documented, although I am suspicious about any one thing that is held responsible for diabetes, autism, irritable bowel syndrome, Alzheimers, the common cold, and many more diseases and conditions. Furthermore, a quick Google search yielded this article from New York Magazine, which is scathingly critical of Perlmutter’s ideas. Caveat lector! (But read also the 70+ dissenting comments below the article.)

Posted in Non-fiction, Science | Leave a Comment »

The Third Chimpanzee: The Evolution and Future of the Human Animal

Posted by nliakos on July 19, 2015

by Jared Diamond (Harper Perennial 2006; originally published by HarperCollins, 1992)

I’ve read several Diamond books by now (Guns, Germs, and Steel; Collapse; Why Is Sex Fun?), and there is a lot of overlap among them, but they are all fascinating and thought-provoking. Diamond is a geographer by profession, but his wide-ranging interests and expertise (from bird-watching to cultural anthropology to history to biology to linguistics and beyond) and his first-person experiences in more countries than one person would normally have the time to visit in a lifetime, let alone live and work in, make his books special.

This one is a complete examination of all aspects of human biology and history, including language development, genocidal behavior, adultery, substance abuse, art,  senescence, and the likelihood of life elsewhere in the universe. Diamond looks at human beings critically, compares them to their closest relatives (chimpanzees and bonobos), and asks whether this or that behavior hard-wired within us? Why do we do it?

For me, the most sobering chapter is the one on genocide, where Diamond  lists the appallingly many such events (he lists 37) that have taken place since 1492 and describes several in excruciating detail. Genocide is not, as we would prefer to believe unusual in our species. Nor is it unknown in other species, although our guns, germs, and steel give us the power to annihilate more people faster.


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