US adult consumption of added sugar has increased by 30% over the past three decades, contributing to rising obesity rates. Added sugar is found in many foods beyond just sweets. Adults who consume one or more sugar-sweetened beverages per day are 27% more likely to be overweight or obese. Sugar causes high insulin and leptin resistance along with low ghrelin levels, disrupting the body's natural appetite controls and leading to overeating. Neurologically, sugar is addictive in a similar way to drugs like cocaine due to dopamine and opioid activity in the brain's reward center.