David Perlmutter (born December 31, 1954) is an American celebrity doctor, author, low-carbohydrate diet advocate and promoter of functional medicine.
[12][13][14][15] Perlmutter wrote the book Grain Brain, released in September 2013, promoting the concept that gluten causes neurological conditions, which was on the New York Times bestseller list for several weeks.
[27] For example, Nash and Slutzky (2014) have written that "according to Grain Brain, much chronic disease originates in the widespread ingestion of carbohydrates, and these foodstuff, rather than cholesterol or saturated fats, are the premier contributor to an unhealthy individual.
"[26] Epidemiologist David Katz, founding director of the Yale-Griffin Prevention Research Center at Griffin Hospital in Derby, CT, has criticized Grain Brain, calling it a "silly book" and saying that "Perlmutter is way ahead of any justifiable conclusion".
[6] Perlmutter's opinion that hormonal birth control has long term negative effects on women has also been criticized by medical experts.
The review concluded that "Perlmutter based his book primarily on belief, selectively citing studies and not including the full body of scientific evidence".