New research indicates that a deficiency in an amino acid could be part of what causes depression. But previous research has validated its importance in metabolism, heart health, immune function and even longevity. Are you getting enough?

Sardines. You either love them or you hate them. But if you were at a high-risk level for type 2 diabetes — meaning you’re prediabetic — and eating just a few a day could turn all that around for you, why not give it a try? Still need convincing? Check out these impressive results…

Antibiotics are lifesavers. But because we’ve relied on them too heavily, we’ve contributed to a big downside: antibiotic resistance. But scientists are finding promise in a nutrient found in many common foods that may trigger good bacteria in the body to go after disease-causing pathogens.