Oat beta-glucan (cholesterol)
What it is
The viscous soluble fibre from oats and oat bran that forms a gel in the gut, trapping bile acids and slowing cholesterol and glucose absorption. The FDA approved the specific health claim in 1997: "3 g/day beta-glucan from oats reduces risk of coronary heart disease." A 2014 Cochrane meta-analysis of 58 RCTs (N=3,974) confirmed it reduces LDL by an average of 5–10% at 3 g/day with excellent safety. Effect is dose-dependent and highly consistent. Unlike most supplements, oat beta-glucan has one of the strongest, most replicated evidence bases in nutritional science — equivalent to a pharmaceutical agent for LDL reduction.
Dose
3 g/day soluble oat beta-glucan (≈1.5 cups cooked oatmeal, or ¾ cup dry oat bran, or 3 g concentrated supplement)
Time of day & tips
Can be obtained from food or supplement form — both equally effective. Effectiveness depends on molecular weight (higher MW forms a better gel). Drink with plenty of water. Consistent daily intake over 4+ weeks for maximum effect. Works synergistically with statin therapy to further reduce LDL.
Cycling
Safe for continuous daily use indefinitely. Benefits reverse quickly if discontinued. One of the few supplements with an FDA-approved health claim. No cycling needed.
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