Fifteen-year-old Tiara Channer was 13 when she was diagnosed with prediabetes a condition 1 in 5 American kids faces that causes an increased risk of Type 2 diabetes, chronic kidney disease and cardiovascular disease. She and her mother, Crystal Cauley, blame her diagnosis on a poor diet. By transitioning from a diet of ultra-processed foods to healthier whole foods and getting more active, Tiara overcame or shed her prediabetes diagnosis " and lost 50 pounds in the process. But it wasn't an easy journey for her, given the challenge of understanding what's healthy and what's not. Ultra-processed food ... comprise over half of an average American adult's diet and two-thirds of an American child's. Lawmakers like Sen. Bernie Sanders say the FDA, the agency that regulates 80% of the country's food, hasn't done enough to protect consumers. Almost half of the approved food additives in the U.S. fall under a category known as GRAS " Generally Recognized As Safe. The nonprofit Environmental Working Group found 99% of the 766 food chemicals introduced between 2000 and 2021 avoided FDA scrutiny using the GRAS designation. Experts like Emily Broad Leib, the director of Harvard's Food Law and Policy Clinic, say GRAS has become a loophole that gives companies a provisional green light to put new additives in food. "Thousands of substances have entered the food supply using that mechanism," explained Broad Leib.