Biology Insights

Brown period blood is usually just older blood, but certain signs can point to something worth checking out. Here's what's normal and what's not.

Metastatic carcinoma means cancer has spread beyond its origin. Learn how it spreads, where it goes, and what treatment options are available.

Tapeworm infections affect millions globally, with some species far more dangerous than others. Here's what the data says about how common they really are.

Daily sex is safe for most people, but it can cause physical wear and affect fertility. Here's what to expect and when to ease up.

Pepcid Complete combines an antacid and acid reducer for faster heartburn relief. Learn how it works, how to take it, and when to talk to your doctor.

Find out how to get norethisterone in the UK, who it's suitable for, and what to expect when using it to delay your period.

Practical lifestyle changes like eating more fiber, swapping fats, and exercising can meaningfully lower your LDL cholesterol over time.

Skyrizi is given as an injection or infusion depending on your condition. Learn about the devices, injection sites, dosing schedules, and why it can't be taken as a pill.

Learn how ARFID is diagnosed, from DSM-5 criteria and clinical interviews to the specialists who can give you an official assessment.

From saline rinses to steam and OTC meds, here are practical ways to get your sinuses draining and breathing easier again.

Formularies determine which drugs your insurance covers and what you pay. Here's how these drug lists work and why they affect your out-of-pocket costs.

Pneumonia treatment depends on your health, setting, and infection type. Learn which antibiotics doctors typically prescribe for different situations.

A high TSH usually points to an underactive thyroid. Learn what your number means, what symptoms to watch for, and how treatment typically works.

Strep throat spreads mainly through droplets and close contact. Learn how long it's contagious and how to lower the risk of passing it to others at home.

Lumbar stenosis rarely has one cause. Learn how aging, disc changes, joint overgrowth, and other factors combine to narrow the spinal canal.

From abortive medications to sleep habits and supplements, here's what actually helps with migraines—both during an attack and long term.

Xylitol toothpaste can help reduce cavity-causing bacteria. Learn which brands contain it, how much you need, and whether to pair it with fluoride.

Suppressive therapy uses daily medication to reduce flare-ups of herpes, HIV, and UTIs. Here's how it works and whether it might be worth considering.