ScienceInsights

Learn how to test PdG at home, what your results actually mean, and how to get the most accurate read on your progesterone levels.

Learn what healthy blood sugar levels look like fasting, after meals, and over time with A1C, plus why numbers shift during pregnancy and overnight.

Tadalafil dosing depends on how you take it, your health, and other medications. Here's what's actually safe and why more isn't always better.

Learn which blood tests diagnose anemia, what each one measures, and how doctors use the results to find the underlying cause.

Vaginal itching has many possible causes, from yeast infections to skin conditions. Learn what might be behind your symptoms and how to find relief.

Most standard condoms fit a 5-inch length just fine—what really determines your best fit is girth, not length.

Antiretroviral therapy can make HIV undetectable, but it's not a cure. Here's what current treatments do, their limits, and where research is headed.

Bee sting itch usually fades in a few hours to days, but some reactions last longer. Here's what's normal and when to seek medical attention.

Erythromycin ophthalmic ointment treats bacterial eye infections and is routinely given to newborns. Learn how it works, how to apply it, and who should avoid it.

Spotting can mean many things, from early pregnancy to hormonal shifts. Learn what the timing and pattern of light bleeding might be telling you.