ScienceInsights

From penicillin to insulin, many common medicines come from bacteria and fungi. Here's a look at the microbes behind some of the drugs you may already take.

Gallbladder attacks cause upper abdominal pain, nausea, and more. Learn how to recognize symptoms and tell them apart from other conditions.

Histamine intolerance is debated in medicine, but the biology is real. Learn what causes it, how it differs from allergies, and how it's diagnosed.

Inflammation can last hours or decades depending on the cause. Here's how long it actually sticks around and what keeps it going.

Poor nutrition in older adults can lead to muscle loss, falls, cognitive decline, and slower healing. Here's what to watch for and why it matters.

Green, watery stool is usually caused by diet or fast digestion, but infections and other conditions can play a role. Here's how to tell what's behind it.

If cold sores tend to appear around your period, hormonal shifts may be to blame. Learn practical ways to reduce outbreaks throughout your cycle.

Smoking triggers a unique type of acne by clogging pores and reducing oxygen. Here's what actually helps clear it up.

Cyanocobalamin is safe for most people, but those with kidney disease or a rare eye condition may do better with a different form of B12.