Popular Supplements Like Turmeric, Lion's Mane, and Omega-3 Show Limited Clinical Benefits
Despite widespread popularity, several commonly used supplements, including turmeric, lion's mane mushrooms, and omega-3 fatty acids, are showing limited or disappointing benefits in clinical trials. Turmeric's key ingredient, curcumin, is often touted for anti-inflammatory and anti-cancer properties, but many original studies supporting these claims have been retracted due to flaws. Curcumin is also poorly soluble and largely excreted, making its efficacy questionable, and some high-bioavailability formulations have been linked to liver injury. Lion's mane mushrooms, marketed as cognitive enhancers, lack substantial research to support these claims, with experts calling for more evidence. Similarly, omega-3 supplements, despite the known benefits of fish consumption, have shown little to no effect on lifespan, heart health, or brain function in rigorous randomized trials and Cochrane reviews.