It seems like there are so many rules about what you can and can't or should and shouldn't eat.
Nutrition doesn't have to be so complicated. Plenty of foods that people think of as unhealthy really aren't that bad, and can even be good for you.
As a general rule, food - real food, with as little processing or packaging as possible - is not bad for you. You can eat too much of many foods, especially foods that aren't vegetables, and most of us could improve our diets by eating more plant-based foods.
But that doesn't mean eating carbs or fatty foods are off-limits. Many foods that have been demonized, like those containing gluten or dairy, can be important parts of a healthy diet for most people.
Here's what the science actually says about ingredients like salt, caffeine, and fat - and why you shouldn't worry about eating them, as long as it's in moderation.