Your genes can help tell you what to eat and influence how diet affects your health.
Variants in some of our genes determine how we metabolize and utilize nutrients, a field of study known as nutrigenomics. Nutritional genetic testing is offered by a handful of companies and clinics, though it is currently expensive and generally not covered by insurance, limiting its usage.
People who have an impaired ability to metabolize iron, for instance, might have an iron deficiency, even if they eat the same diet as others who process the mineral more efficiently. Similarly, some people don’t adequately absorb calcium, and they might benefit from a bone-density test and specialized nutritional advice.
Excerpted from wsj.com