Most people blame their shampoo. Some switch to expensive hair serums. Others start taking supplements, oiling religiously every weekend, or trying every viral hair care hack they come across. But while the spotlight often falls on what goes on the hair, experts say it’s equally important to look at what goes into the body. Hair doesn’t grow in isolation. Every strand depends on a steady supply of protein, iron, zinc, vitamins, healthy fats, and other nutrients carried through the bloodstream. When the body isn’t getting what it needs or is getting too much of things that interfere with those nutrients, hair is often one of the first places where the effects begin to show. No single food is responsible for hair loss, and eating these foods occasionally isn’t something to worry about. In fact, many of them can be part of a healthy diet. The concern arises when they become a daily habit and begin replacing nutrient-rich meals. Over time, that imbalance may affect not only overall health but also the strength, thickness, and growth of your hair. Here are some foods that experts recommend enjoying in moderation if you’re trying to keep your hair healthy.