Curcumin

Curcumin earns 5.5–6.0/10 as a solid, benign anti-inflammatory with one strong use case and a lot of marketing noise around it. Take it for osteoarthritis, where it performs comparably to diclofenac, or for elevated inflammation. Buy a bioavailable form or whole-root preparation, and give it two months. Don't take it expecting a cognitive or longevity payoff, because that evidence isn't there yet. The rare liver-injury signal is real but manageable if you avoid piperine-heavy products long term and know your risk factors.

✅ Best for: People with knee or hand osteoarthritis who want an anti-inflammatory that rivals NSAIDs with a gentler GI profile. People with elevated C-reactive protein looking for a botanical that reliably lowers it. Those with ulcerative colitis who want an add-on to mesalamine, under their doctor's guidance. Curcumin also suits anyone who prefers a whole-root turmeric preparation for the turmerosaccharide synergy over an isolated extract, and people who tolerate NSAIDs poorly and need a slower but better-tolerated joint option.

❌ Avoid if: You have gallstones or bile-duct obstruction, since curcumin stimulates gallbladder contraction and a perforation case exists. You take warfarin or antiplatelet drugs, where bleeding risk and INR can rise. You carry known HLA-B*35:01 susceptibility or have existing liver disease and want to use high-absorption piperine or liposomal forms. Skip it too if you're pregnant, in which case culinary turmeric is fine but concentrated supplements are not, or if you're on active chemotherapy unless your oncologist signs off, given the antioxidant interaction. One sourcing caveat for everyone, buy third-party-tested turmeric, since lead-chromate adulteration is a documented supply-chain problem separate from the compound itself.