They were the first generation of Americans to grow up with ultra-processed foods all around them - products typically loaded with extra fat, salt, sugar and flavorings. They were children and young adults at a time when such products, designed to maximize their appeal, proliferated. Now, a study shows, 21% of women and 10% of men in Generation X and the tail end of the Baby Boom generation, now in their 50s and early 60s, meet criteria for addiction to these ultra-processed foods.