Should Your DNA Guide Your Diet?

In an opinion piece, a college professor in the U.K. who had written about personalized nutrition wanted to find out whether she should change her diet based on her genetic profile. She decided to send her DNA to Norway for analysis.

Her genetic profile indicated that she was at risk for having high cholesterol and an increased risk for cardiovascular disease. To deal with that, she became a vegetarian. She also takes high levels of B vitamins because she doesn’t process one of the B vitamins very well. Her point was that knowing her genetics gave her the motivation to take control of her diet and lifestyle. She now advocates that all of us should take control of our health through personalized nutrition based on our DNA analysis.

I’m not so sure. I think genetics are one piece of a complex puzzle. What causes the genes to express themselves? What turns them off? More than anything, what role does the microbiome play when combined with the genes? We still don’t know the answers to any of those questions.

Someday we may be at a point where we can be very specific about nutrition, but we’re not there yet because we not only don’t know the answers—we don’t know the correct questions to ask. For reliable results, it still comes down to what I always tell you: Eat better. Eat less. Move more.

What are you prepared to do today?