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Looking straight up at a ceiling fan blurred into a spinning disc above a still, quiet room - cool white and pale grey overhead, warm wood calm at the edges. A heart is a pump with a speed; this page asks how fast is too fast.

How High Is Too High for a Heart Rate?

Over 100 at rest is the textbook line - but context is the referee. The readings walked through one by one, the two shapes of a fast pulse, why a...

How High Is Too High for a Heart Rate?

Over 100 at rest is the textbook line - but context is the referee. The readings walked through one by one, the two shapes of a fast pulse, why a...

A hummingbird hanging perfectly still in mid-air beside a motionless glass feeder, wings blurred into fans by the speed of their beating, jewel-green back and ruby throat bright against a soft grey-green garden.

Why Is My Heart Rate So High?

A resting pulse that keeps running high is usually the heart answering something - a weakening pump, thin blood, low fluid, a rhythm fault, the thyroid, or the medicine shelf....

Why Is My Heart Rate So High?

A resting pulse that keeps running high is usually the heart answering something - a weakening pump, thin blood, low fluid, a rhythm fault, the thyroid, or the medicine shelf....

Photograph: a reservoir drawn far down to its cracked bed at golden hour - deep cracks in ochre and dried-mud brown earth reaching toward one last narrow ribbon of water reflecting a violet dusk sky. The body's fluid supply running low, in plain sight.

Can Dehydration Cause Low Blood Pressure?

Yes - when the body runs low on fluid, there is less volume filling the vessels and blood pressure falls, and the kidneys, which filter by pressure, slow in the...

Can Dehydration Cause Low Blood Pressure?

Yes - when the body runs low on fluid, there is less volume filling the vessels and blood pressure falls, and the kidneys, which filter by pressure, slow in the...

Extreme close-up inside the body: a kidney filter mesh gone dark and clogged, choked with pale ivory foam and dull waste, one thin arterial-red vessel threading across a deep teal-green darkness - a filter that has stopped clearing.

What Are the Symptoms of Kidney Failure?

Kidney failure is not early kidney disease: it is the end of that road, felt in the body - fluid swelling and crowding the lungs, waste building up into nausea,...

What Are the Symptoms of Kidney Failure?

Kidney failure is not early kidney disease: it is the end of that road, felt in the body - fluid swelling and crowding the lungs, waste building up into nausea,...

Still life photograph: a cleared porcelain dinner plate with the fork rested down, a folded sage linen napkin, and a home blood pressure cuff coiled beside the place setting - the quiet hour after a meal, when blood pressure quietly dips.

Why Does My Blood Pressure Drop After Eating?

Postprandial hypotension in plain words: after a meal, blood heads to the gut and an older circulation may answer too slowly. The 20-point drop that defines it, the home-cuff test,...

Why Does My Blood Pressure Drop After Eating?

Postprandial hypotension in plain words: after a meal, blood heads to the gut and an older circulation may answer too slowly. The 20-point drop that defines it, the home-cuff test,...

Why Is My Blood Pressure Low?

Why Is My Blood Pressure Low?

Your reading came back low and nobody explained it. The causes, grouped the way they actually happen: the pills, the volume, the blood itself - including kidney anemia - the...

Why Is My Blood Pressure Low?

Your reading came back low and nobody explained it. The causes, grouped the way they actually happen: the pills, the volume, the blood itself - including kidney anemia - the...

These articles are informational only and are not meant to replace the advice of your qualified healthcare provider. As with any issues related to your health, check with your doctor.