DayTwo is just one of a host of apps claiming to offer A.I. eating solutions. Instead of a traditional diet, which often has a set list of "good" and "bad" foods, these programs are more like personal assistants that help someone quickly make healthy food choices. They are based on research showing that bodies each react differently to the same foods, and the healthiest choices are likely to be unique to each individual. Whether these A.I. nutritionists are ready for widespread use is still unclear, and there is very little research available from sources outside the companies selling apps. Users should be wary of overly broad claims that go beyond predicting how foods affect blood sugar.

Companies are experimenting with personalized eating apps and say the future of healthy eating lies in artificial intelligence. After 20 years with type 2 diabetes, Tom Idema has given up hope of getting his condition under control. He tried many diets without success and even considered bariatric surgery. When her employer gave her the opportunity to use a new diet app that uses artificial intelligence to monitor blood sugar, she accepted. READ MORE: What is Dark Matter?

HealthifyMe, a five-year-old start-up backed by Dubai-based NB Ventures, has unveiled a new health and fitness app, by which a user can talk to a nutritionist created by artificial intelligence. The Bengaluru-based firm, which developed the eponymous app, will make the new AI-powered app available to select consumers initially and roll-out the full feature version by January, Tushar Vashisht, co-founder and CEO said in an interview. "There are three million users and 100 million exercises on the app," Mr. Vashisht said. "Millions of exchanges between nutritionists and consumers led us to create a knowledge graph. The graph consisted of both structured and unstructured data. It is probably the world's first completely artificial intelligent nutritionist."