In the next 10 years, the emerging field of ‘personalised nutrition’ will use genetic tests to fill in those gaps to offer healthy eating guidance tailored to the individual. Some companies, so-called ‘nutrigenetics services’, already test your DNA and offer dietary advice – but the advice can be hit-and-miss. By 2028, we will understand much more about our genetics. Dr Jeffrey Blumberg, a professor of nutrition science and policy at Tufts University in Massachusetts, is one of the most outspoken advocates of this new science. He insists that DNA testing will unlock personalised nutrition. “I’ll be able to tell you what kinds of fruits, what kinds of vegetables and what kinds of wholegrains you should be choosing, or exactly how often,” he says.So in 2050, supermarket shelves will be stocked with functional foods. Instead of just a baby food section, we’ll have products tailored to every segment of the population–foods optimized for women, men, and the elderly. Food science will formulate the best nutritional profile for each demographic group, as well as for each individual.“Once we have a complete picture of the human genome, we’ll know how to create food that better meets our needs,” says Prof. Yoram Kapulnik, director of the Volcani Center. When parents make their children’s school lunches in the morning, they’ll use a nutritional database to help them figure out what’s best for each child,factoring in everything from getting enough vitamins to dealing with digestive system issues. “Food will be more expensive,” Kapulnik says, “but it will also be customized to each one of us.” Another direction is the combination of food creation with engineering. Eventually people may start printing out food at home. Those who want to turn to technological solutions instead of spending time with preparing and cooking meals will have a chance to use 3D printers at home.Personalized 3D printed food in your choice of color sounds great, but it’s likely to remain a luxury affordable only to small segments of the world’s population. In the third world, food will be bland, monotonous, and increasingly a mere necessity of survival. The experts think developing countries will come to rely on some type of compact food rations similar to NASA’s famous astronaut packets – nutritionally fortified energy bars, biscuits or dehydrated snacks – to help feed growing numbers of hungry people. These items may not be very appetizing, but they will be functional, formulated to provide maximum nutrition and a feeling of satiety. Kapulnik predicts that developed countries, too, may come to rely on food concentrates to meet some of their needs. When the time comes, if people are still eating traditional sit-down meals, 3D printers will help meet the demand for culinary variety and novelty. Otherwise, good old energy bars will do the job.