✕ Myth
Most people are low in magnesium because our soil is depleted.
✓ Fact
About half of people in the U.S. eat less magnesium than recommended, but real deficiency symptoms are uncommon in healthy people — the kidneys hold on to it.
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✕ Myth
Cut 500 calories a day and you'll keep losing a pound every week.
✓ Fact
Weight loss slows over time as your body uses less energy. A steady 1–2 lb (0.5–1 kg) a week is a realistic, safer goal.
Source: Hall KD et al · CDC
✕ Myth
Sunbathing is the healthy way to get your vitamin D.
✓ Fact
Sunlight does make vitamin D, but UV light also causes skin cancer. Food and supplements are safer ways to get enough.
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