When you hand over that little cup, you're participating in a medical tradition more than 6,000 years old.
The seeds of the guarana fruit are about the size of coffee beans, but they contain more than twice as much caffeine, along with other compounds.
Guar gum is a food additive that helps make ice cream creamy. It's also one reason ice cream is getting more expensive these days. Here's a look at why.
Folic acid deficiency can cause anemia, and lead to serious birth defects. But too much may cause cancer.
Gluten is an indigestible protein found in grains. Gluten should be avoided by people with celiac disease and gluten sensitivity, but evidence has not shown it is harmful to others.
BHA is added to many foods, especially fats and oils, to prevent them from spoiling. But is this chemical bad for you?
Omega-3 fatty acids may come from fish, but there's nothing fishy about their disease-fighting qualities.
Potassium bromate, a food additive that can help bread dough hold together, is banned in several countries, but legal in the U.S.
Sure, a product made from low-quality scraps of meat processed with ammonia is gross. But is it really bad for you?
If the idea of eating red food dye made from bugs grosses you out, consider that if it doesn't come from a bug, it may come from something worse.