ScienceInsights

Eye color comes down to one pigment, and blue eyes get their color from light scattering, not pigment at all. Here's how it actually works.

Learn which herpes tests are accurate, when to get tested, and how to choose between a swab, blood test, or Western blot based on your situation.

Low energy may signal a nutrient gap. Learn how B12, iron, magnesium, and vitamin D support your body's energy production and what to do about it.

Swallowing semen is generally safe for most people, but STI transmission is a real risk. Here's what the science actually says.

Seroquel feels sedating, but it's an antipsychotic with real risks. Here's what that distinction means for how it's used and prescribed.

Adults typically have 12 molars, while kids have 8. Learn why your count may vary and what makes molars different from your other teeth.

Learn how to do a nasal saline rinse at home, including what you need, how to make the solution, and how often to use it safely.

Leprosy still affects hundreds of thousands of people yearly, but it's hard to catch, treatable, and even armadillos play a role in its spread.

From common browns to rare violets, learn what causes each eye color, how genetics play a role, and what your eye color might mean for your health.