
Thiazide diuretics and bone
Also called: hydrochlorothiazide bone protective
What it means
Thiazide diuretics are blood pressure medicines that cause the kidneys to hold onto calcium instead of losing it in urine. This side effect may slightly help bone density, though they are never prescribed specifically for bone health.
If you're on a thiazide for blood pressure, it's helpful to know it may have a modest, incidental effect on your calcium levels and bone density.
Thiazide diuretics, like hydrochlorothiazide, are common medications used to treat high blood pressure. They work by changing how the kidneys handle sodium and water, which lowers blood volume and blood pressure. A side effect of this process is that the kidneys reabsorb more calcium instead of excreting it in urine, which raises calcium levels in the blood slightly.
Because of this calcium-retaining effect, thiazide use has been associated with somewhat higher bone mineral density and possibly a lower rate of bone loss compared to people not taking them. This is considered a side benefit rather than a treatment goal, and thiazides are not prescribed to treat osteoporosis or low bone density.
If you take a thiazide diuretic, this doesn't change how you should think about your bone health checkups, calcium intake, or exercise habits. Any questions about how your blood pressure medication might relate to your bones, or whether a diuretic is still right for you, should go to your prescriber, who can weigh your full health picture.
Thiazide blood pressure medicines cause kidneys to retain calcium, which may modestly help bone density as a side effect.
Where this leads
WordThiazides help your body hold onto calcium. Curious about a different type of water pill that has the opposite effect on calcium and bone?


Related words

Loop diuretics are water pills, like furosemide, that help the body get rid of excess fluid. A side effect is that…

Calcium is the main building-block mineral in bone, and since your body can't make it, you need to get it from food…

Bone mineral density (BMD) measures how much mineral is packed into your bones, usually estimated with a DEXA scan,…

Drug-induced osteoporosis is bone loss caused by a medication taken for another health condition, rather than by…

Secondary osteoporosis is bone loss caused by another disease, medication, or condition — rather than just aging or…

Osteoporosis treatment options are the medical approaches used to slow bone loss or build new bone, including…
Education only, not medical advice. Decisions about tests, medications and treatment belong with your own doctor. OsteoStrong does not diagnose, treat or cure any disease.


