Potassium
The blood pressure mineral most diets lack.
~98% of Americans do not meet the adequate intake for potassium
Why it matters for longevity
Potassium is essential for maintaining normal blood pressure, fluid balance, and nerve-muscle communication. It counteracts the hypertensive effects of sodium. A meta-analysis in the BMJ found that increasing potassium intake to 3,500-4,700mg daily was associated with a 24% lower risk of stroke. Blue Zone populations consistently consume potassium-rich diets built around beans, greens, and fruit.
How much you need
2,600mg for women, 3,400mg for men (adequate intake)
Longevity researchers recommend 3,500-4,700mg daily, prioritizing food sources over supplements.
Signs you might be low
- Muscle cramps and weakness
- High blood pressure
- Fatigue and lethargy
- Heart palpitations or irregular heartbeat
Best food sources
Key research
Aburto NJ et al. (2013). Effect of increased potassium intake on cardiovascular risk factors and disease. BMJ, 346, f1378.
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