In the era of biohacking, big data, and a worsening health crisis, startups are clamoring to personalize nutrition plans according to individual genetic profiles. It seems a perfect solution to the conflicting nutrition advice provided by today’s diet zeitgeist: mediterranean vs. ketogenic, paleo vs. plant-based, DASH Diet vs. Whole30. Which macronutrient is most evil? Which of these dietary equations will solve our personal and public health problems? The new answer, according to cutting edge companies like Habit, Nutrigenomix and DNAFit, is that there is no one-size-fits-all diet. Our metabolic responses differ according to our genes.