Deep
Nutrition, a book by Catherine Shanahan, MD, and
Luke Shanahan, is not a “blockbuster” by today’s standards, but it is a very
good read, and I highly recommend it to my readers. Cate Shanahan comes to her
views on nutrition from her undergraduate studies in epigenetics and
biochemistry in Cornell University’s molecular biology program. After
graduating from the Robert Wood Johnson Medical School, in a devastating
Epilogue to her book she explains her departure from conventional medicine.
That’s the subject of the next column. This one is about “Deep Nutrition.”
“This book describes the diet to end all
diets,” Shanahan begins. “The Human Diet,” a phrase she coins to “describe the
communalities between all the most successful nutritional programs people the
world over have depended on for millennia to protect their health and encourage
the birth of healthy children so that the heritage of optimum health can be
gifted to the next generation, and the generation that follows.” In other
words, our genetic heritage is heritable and depends on what we eat. Connecting
biochemistry to epigenetics, she says, “Your
diet changes how your genes work.”
“The greatest gift on earth,” Shanahan
explains, “is a set of healthy genes.”But, “genes that were once healthy can,
at any point in our lives, start acting sick” by “factors that force good genes
to behave badly, by switching them on and off at the wrong time.” Epigenetics,
she explains, is about this “genetic expression,” not about genetic mutation.
Long time readers will recall that I wrote about a branch of epigenetics in
#120, “Nutrigenomics
-- an emerging new science.”
“Human health depends on traditional foods,”
she avers. “Food is like a language, an unbroken information stream that
connects every cell of your body…” “The better the source and the more
undamaged the message when it arrives to your cells, the better your health
will be.” “The bottom line,” she says, “is clear.” “We control the health of
our genes” because “you…have control over what may be the most powerful class
of gene regulating factors: food.”
“By simply replenishing your body with the
nourishment that facilitates optimal gene expression, it’s possible to
eliminate genetic malfunction and, with it, pretty much all known disease. No
matter what kind of genes you were born with, I know that eating right can help
reprogram them, immunizing you against cancer, premature aging and dementia,
enabling you to control your metabolism, your moods, your weight – and much,
much more.” That a pretty powerful claim, but, she says, you owe it to your
children [who inherit your genes] to give them “a shot at reaching for the
stars.”
All these quotes are from the Introduction
and Chapter One. The next five chapters, on subjects like “Dynamic Symmetry”
and “A Mother’s Wisdom,” were of less interest to me. Then, in Chapter Seven,
she gets to “the meat” of her ideal “Human Diet,” what she calls “The Four
Pillars of World Cuisine.” They are: “meat on the bone, fermented and sprouted
foods, organs and other ‘nasty bits,’ and fresh, unadulterated plant and animal
products.”
With meat, she says, “The secret? Leave it
on the bone. When cooking meat, the more everything stays together – fat, bone,
marrow, skin – and other connective tissue – the better.” And “Rule Number One:
Don’t Overcook It; Rule Number Two: Use Moisture, Time and Parts; Rule Number
Three: Use the Fat; Rule Number Four: Make bone stock.” The sections on the
other three pillars are equally good. Personally, I love organ meats and am
coming to love some of the more exotic fermented
foods. And we always eat fresh and/or raw
vegetables with dinner every day.
Perhaps the very best parts of the book,
though, are Chapters Eight and Nine: Dr. Shanahan’s attack on “vegetable oils
and sugar.” You can see it coming. At the end of Chapter Seven, she puts it
very succinctly: “Because vegetable oil and sugar are so nasty and their use in
processed foods so ubiquitous that they have replaced nutrient-rich ingredients we would otherwise eat, I
place vegetable oil and sugar before all others, on the very top of my don’t eat list.” Throughout the
book she links these two products of industrial food manufacturing to maladies
that she sees in her medical practice.
What I particularly liked about both
chapters is how well she explained the biochemistry. In addition to explaining
the mechanisms and pathways in easy to understand language, she supplemented
these with colorful and creative metaphors.
One of her concluding thoughts: “Vegetable oils
and sugar,” she says, “are the real culprits for diseases most doctors blame on
chance, or – even more absurdly – on the consumption of animal products that
you need to eat to be healthy.” Hooray, Dr. Shanahan! I wish you could be MY
doctor!