The FDA's April 2026 proposal would end large-scale compounding of semaglutide and tirzepatide. Individual-patient compounding isn't affected, but the supply picture is about to shrink.

A scar's color tells you exactly what stage of healing it is in. Here's why the final stage is almost always pale, not pink.

Two people can sit in the same back seat and have completely different afternoons. The difference traces back to how tightly the brain's balance system is wired, and to genes researchers are only now starting to map.

Roughly 1 in 5 people get bitten far more than everyone around them. Blood type, sweat chemistry, exercise and genetics all contribute, and the beer connection remains an unsolved mystery.

Doubling your SPF doesn't double your protection. The real gap between SPF 30 and SPF 50 is smaller than the label suggests, and how much you apply matters more than either number.

About 32 million insured US adults reached their dental plan's annual maximum in 2024, and nearly half stopped care as a result. The cap behind it hasn't meaningfully moved in decades.

Summer-pattern seasonal affective disorder is the lesser-known, agitated opposite of winter depression -- real enough for NIMH's diagnostic criteria, but still short on answers about its cause.

Drug ads that name a condition and a brand are banned nearly everywhere in the world. Here's how the US and New Zealand ended up as the two exceptions.

Seventy percent of people are biologically wired for a sleep schedule the workweek doesn't respect. Social jet lag is what happens when body clock and calendar keep disagreeing.

A growing number of states let doctors with strong approval records skip prior authorization entirely. Here's how 'gold carding' works, and its limits.

A bottle of melatonin in an American drugstore can pack five to ten milligrams; the same supplement in France is capped under two. The regulatory gap has real consequences for how families use -- and mis-store -- a hormone most people assume is harmless.

A year after roughly 60 insurers pledged to streamline prior authorization, a new AMA physician survey shows the process is still slow, still denied often, and still eroding trust.

An allergist and UK clinical guidance disagree on whether daily antihistamines like Zyrtec lose potency over time, and what to do if yours seems to.

"Popcorn brain" isn't a medical diagnosis, but the dopamine-driven attention pattern it describes is one clinicians take seriously. Here's what the evidence actually supports.

For most people, Benadryl brings on sleep. For a smaller group, it brings on racing thoughts and restless legs instead, a documented reaction called paradoxical excitation.

Rust is just iron oxide; it's the soil clinging to an old, outdoor object that carries the bacteria doctors actually worry about when they ask about your last tetanus shot.

Almost half of heat-related deaths happen on a worker's first day. Heat tolerance is not willpower, it is a two-week physiological build with a documented schedule.

The internet's favorite evidence for stacking creatine with magnesium tested a compound most people are not taking. What the trials actually show, and where the safety ceilings sit.

Two of the most-searched calm-down supplements do very different jobs. Here is what the evidence shows, and how to tell which one your sleep problem needs.

L-theanine and magnesium are the internet's favorite sleep supplements. Here is what randomized trials actually found, and which one fits sleep versus anxiety.