“This, then, is the promise — and the hype — of nutritional genomics, the second wave of personalized medicine to come rolling out of the Human Genome Project (after pharmacogenomics, or designer drugs). The premise is simple: diet is a big factor in chronic disease, responsible, some say, for a third of most types of cancer. Dietary chemicals change the expression of one’s genes and even the genome itself. And — here’s the key — the influence of diet on health depends on an individual’s genetic makeup.” NY Times