Health questions, answered

Sleeping a full night but still feeling exhausted points to causes beyond just sleep quantity. Here's what could be going on.

For people managing blood sugar, the A1C test reflects months of averages. Here's how quickly lifestyle and treatment changes can move it.

Morning nausea isn't only a pregnancy symptom. Here are the many other common causes and when to seek help.

That brief head-rush when you stand is usually harmless, but knowing the cause helps you tell when it isn't.

When one pain reliever isn't enough, can you combine these two common medications? Here's what the evidence says.

Daily headaches are more common than you might think, but they're not something to simply live with. Here's what they can mean.

Skipping meals can leave you dizzy and shaky. Here's the physical reason and when it might signal something more.

Sudden, painful leg cramps that strike during sleep are common and have several identifiable causes. Here's what's behind them.

Heartburn that worsens when you lie down is a classic pattern with a clear physical explanation. Here's what's happening and how to relieve it.

Waking at the same early hour night after night is a common and frustrating pattern. Here are the most likely causes and what helps.

Anxiety can produce frighteningly real chest pain. Here's how to tell it apart from a cardiac event — and why you should still get checked.

If you're reaching for a sweater when everyone else is fine, several factors could explain it. Here's what causes feeling cold all the time.

You've probably been warned it causes arthritis. Here's what decades of research actually found about knuckle cracking.

A headache that arrives like clockwork each afternoon usually has a specific, identifiable trigger. Here's what to look for.

Noticing more bruises than usual can be unsettling. Here are the common, mostly harmless causes — and the signs that warrant a doctor's visit.

High cholesterol affects nearly 94 million American adults. These lifestyle changes can reduce your numbers by 20–30% — comparable to some medications.

Sleep affects everything from your heart health to your weight and mental clarity. Here's what the science actually says.

Cold and flu symptoms overlap significantly — but they're different illnesses requiring different responses. Here's how to tell them apart.

Millions of people have Type 2 diabetes without knowing it. Here are the warning signs — and when to get tested.

Heart attacks don't always look like they do in movies. Knowing all the warning signs — including the subtle ones — can save your life.

Health insurance is full of confusing terms and hidden limits. Here's a plain-English breakdown of what's covered and what you'll still pay out of pocket.