Is Strength Training Actually a Heart-Health Intervention?

Yes, and the data on women specifically is striking. Three strength-training sessions a week are linked to a 28% reduction in all-cause mortality in women, compared to 14% in men. That's not a small edge.

Nafpoli Greece

Some of that benefit is what you'd expect: strength training improves blood pressure, blood glucose, cholesterol, and body composition, and it lowers resting heart rate. But there's a second set of mechanisms that get less attention:

• Raises cardiorespiratory fitness, a stronger predictor of heart risk than weight alone

• Improves endothelial function, how well your blood vessels dilate and respond

• Favorably affects fibrinolysis, sleep, and mood, all of which feed back into cardiovascular health

Three sessions a week is the number tied to that outcome. It doesn't need to be complicated to count.

Fiber is the other lever worth prioritizing. It lowers LDL and triglycerides, keeps blood sugar more stable after meals, and alters bile acid metabolism in a way that also lowers blood pressure and diabetes risk. The target is 25 grams a day for women, with 30 grams as a reasonable stretch goal.

One caveat: don't add it all at once. Jumping from a low-fiber diet to 30 grams a day in a week usually causes bloating and discomfort, what's sometimes called fiber shock. Increase gradually over a few weeks and drink enough water alongside it.

If you're not currently strength training, start with two to three sessions a week, bodyweight or light weights both count. And build fiber up slowly toward 25 to 30 grams a day rather than overhauling your diet overnight.

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