David Katz Science Guru

David L. Katz, MD, MPH, FACPM, FACP, FACLM, is the Founding Director (1998) of Yale University’s Yale-Griffin Prevention Research Center, and current President of the American College of Lifestyle Medicine. He has published roughly 200 scientific articles and textbook chapters, and 15 books to date, including multiple editions of leading textbooks in both preventive medicine, and nutrition. He has made important contributions in the areas of lifestyle interventions for health promotion; nutrient profiling; behavior modification; holistic care; and evidence-based medicine. David earned his BA degree from Dartmouth College (1984); his MD from the Albert Einstein College of Medicine (1988); and his MPH from the Yale University School of Public Health (1993). He completed sequential residency training in Internal Medicine, and Preventive Medicine/Public Health. He is a two-time diplomate of the American Board of Internal Medicine, and a board-certified specialist in Preventive Medicine/Public Health. He has received two Honorary Doctorates.


Modern Medicine and Maladies of Evidence

I won’t name any names, but I just read that a former science editor at a major, global publication has concluded that science advocacy is boring, and that she would now prefer to “slaughter the sacred cows” of conviction. Leaving aside the somewhat brutal image, and the potential innocence and genuine sacredness of the cows in question, we may simply note that acquiring conviction born of science generally takes years, even decades. Disparaging it just takes a news cycle, innuendo, and a bit of click-bait.


Of Course Cancer Isn’t Random

Despite the study in one of the world’s most prestigious scientific journals, and the high-profile media coverage of it: no, cancer is absolutely NOT mostly random and a product of “bad luck.” It wasn’t true when these same investigators published very similar work generating very similar media hype and nonsense three years ago, and it isn’t true now. 


Big, Fat, New Meaning to “Red State”

I have quipped wryly for years that the relentless rise in obesity rates would eventually exhaust Crayola’s supply of colors. That’s because the CDC has long tracked the rising prevalence of obesity by state using color-coded maps of the U.S.


Vitamin D Supplementation: of Scandal, Sunlight, and Skin in The Game

The New York Times recently ran a story indicating that a prominent physician scientist particularly associated with advocacy for vitamin D supplementation may have important conflicts of interest. The case is made that this doctor, an endocrinologist at Boston University, has personally contributed enormously to sales of vitamin D, testing for vitamin D, and even the use of tanning salons through his influence on peers and the public. He has in turn been at the receiving end of very considerable compensation from companies that make and sell supplements, perform tests, or offer tanning beds.


Is Any Alcohol Dangerous to Your Health?

In a word: yes. In two words: of course. But crossing a street is dangerous to your health. Driving a car or riding a bike is dangerous to your health. So that’s not really very helpful information.