ScienceInsights

Left leg tingling can stem from a pinched nerve, poor circulation, or vitamin deficiency. Here's how to tell what's causing it and when to see a doctor.

Low estrogen can affect mood, sleep, and more. Here's what the evidence says about diet, lifestyle, and supplements that may help support healthy levels.

Cialis works within 30–60 minutes and lasts up to 36 hours. Here's what to know about timing, food, alcohol, and daily dosing options.

Brown discharge after sex is often old blood from minor friction, but it can also signal infections, polyps, or hormonal changes worth checking out.

Hydrocodone affects pain, mood, and the body in distinct ways. Learn what the drug actually feels like and how that experience shifts with time and dosage.

UC flares can last days or months depending on severity and treatment. Here's what to expect and when to seek urgent care.

From retinoids to laser therapy, here's what science says actually fades facial age spots—and how to pick the right option for your skin tone.

From moisturizers and lubricants to vaginal estrogen and laser therapy, here's how to find the right treatment for vaginal dryness.

Social media doesn't harm everyone equally. Learn how comparison, algorithms, and filters raise eating disorder risk—and what the research says actually helps.

Learn about skin prick, blood, and patch allergy tests, what they cost, and how to make sense of your results with help from your doctor.