Nov 3rd 2025
Eat Your Spinach! Popeye was Right!
. . . spinach makes you strong A study just in from the Karolinska Institute in Sweden has proven cartoon character Popeye, who downed a can of spinach whenever he needed extra strength, knew what he was doing. In tests with mice, nitrates, which are found in vegetables like spinach, beets (root), chard and lettuce, had a powerful effect on boosting muscle strength. The particular muscles strengthened, the so-called “fast-twitch muscles,” are those used in lifting weights or sprinting up a steep hill. The researchers discovered that nitrates stimulate production of two proteins which release calcium into muscle. Calcium is used in muscle contraction, and the more calcium that is available, the stronger the contraction will be. Stronger contractions build muscle strength; when muscles are stronger, they don’t need to contract as frequently and don’t fatigue as quickly. The amount of nitrate needed was what you could expect to find in either half a pound of spinach or 2-3 beets…
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