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Can Calcium Supplements Cause Kidney Stones?

Calcium from food protects against kidney stones; a calcium pill swallowed alone can feed them. The paradox is timing: calcium taken with a meal binds oxalate in the gut, while...

Can Calcium Supplements Cause Kidney Stones?

Calcium from food protects against kidney stones; a calcium pill swallowed alone can feed them. The paradox is timing: calcium taken with a meal binds oxalate in the gut, while...

Photograph of a bathroom shelf: a plain chalk-white bottle with a blank label tipped on its side, white tablets spilled across a slate-blue shelf, sea-glass green bottles blurred behind - the everyday shelf where magnesium hides from a kidney patient.

Is Magnesium Safe If You Have Kidney Disease?

Healthy kidneys flush extra magnesium without thinking; failing kidneys cannot - so the same bottle that is harmless to your neighbor can stack up in you. Where magnesium hides (supplements,...

Is Magnesium Safe If You Have Kidney Disease?

Healthy kidneys flush extra magnesium without thinking; failing kidneys cannot - so the same bottle that is harmless to your neighbor can stack up in you. Where magnesium hides (supplements,...

Photograph in pale window sunlight: small amber vitamin D gel capsules spilled on a windowsill beside a rough, jagged kidney stone - the bottle and the stone, side by side, in soft gold light.

Can Vitamin D Cause Kidney Stones?

Vitamin D pulls calcium from food into the body - and extra calcium leaves through the urine, where stones grow. The honest, two-sided answer for the reader handed a bottle...

Can Vitamin D Cause Kidney Stones?

Vitamin D pulls calcium from food into the body - and extra calcium leaves through the urine, where stones grow. The honest, two-sided answer for the reader handed a bottle...

Photograph: an unbranded steel scoop heaped with pale protein powder beside a vintage steel balance scale holding a small mound of the same powder, against a deep plum shadow - protein weighed out as a dose, which is the question this article answers.

Is Protein Powder Bad for Your Kidneys?

Does protein powder hurt your kidneys? For healthy kidneys, the evidence says no. For kidneys already weak, protein is a budget a shake can quietly spend - and the tub...

Is Protein Powder Bad for Your Kidneys?

Does protein powder hurt your kidneys? For healthy kidneys, the evidence says no. For kidneys already weak, protein is a budget a shake can quietly spend - and the tub...

Close-up photograph: a halved orange and a halved lime on dark charcoal slate beside a cluster of pale amber crystals like a small kidney stone - the vitamin in the fruit, and the oxalate crystal that extra vitamin C can become.

Can Vitamin C Cause Kidney Stones?

At food amounts, no. At supplement megadoses, yes - the body turns extra vitamin C into oxalate, the main ingredient of the commonest kidney stone. Where the megadoses hide, who...

Can Vitamin C Cause Kidney Stones?

At food amounts, no. At supplement megadoses, yes - the body turns extra vitamin C into oxalate, the main ingredient of the commonest kidney stone. Where the megadoses hide, who...

A classic wooden metronome with a brass pendulum swinging fast on the polished mahogany top of a piano, ivory keys soft in the foreground - a quiet instrument keeping too fast a time, like a resting heart that will not slow.

Why Is My Resting Heart Rate So High?

A resting heart rate is the speed your heart picks when nothing is asked of it. What the number should look like, how to measure it honestly, why it creeps...

Why Is My Resting Heart Rate So High?

A resting heart rate is the speed your heart picks when nothing is asked of it. What the number should look like, how to measure it honestly, why it creeps...

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.

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