I've never seen concrete evidence that it does anything. Wikipedia also seems to say it's all ambiguous, with studies flip flopping as much as coffee and wine health studies.
- has no effect on diabetes, Crohn's disease, asthma, alzheimers
- harmful: increases the risk of prostate cancer
Regarding coffee, there is strong evidence that consumption of black coffee reduces the risk of cardiovascular disease -- a massive meta-analysis of 36 studies covering 1.28 million people and 36500 cases of cardiovascular disease showed a nonlinear association with minimal CVD risk at 3-5 cups per day [2].
Fish oil and the other ones parent mentioned are all part of my daily routine. I went from 7/10 pain level to 2/10.
Those all get mentioned a lot in various help support groups.
- effective for preterm birth
- promising for colorectal cancer
- inconclusive for cardiovascular disease, low sperm count, depression, psychosis, cystic fibrosis
- slightly beneficial for cancer symptoms
- has no effect on diabetes, Crohn's disease, asthma, alzheimers
- harmful: increases the risk of prostate cancer
Regarding coffee, there is strong evidence that consumption of black coffee reduces the risk of cardiovascular disease -- a massive meta-analysis of 36 studies covering 1.28 million people and 36500 cases of cardiovascular disease showed a nonlinear association with minimal CVD risk at 3-5 cups per day [2].
[1] https://informationisbeautiful.net/visualizations/snake-oil-...
[2] https://www.ahajournals.org/doi/full/10.1161/circulationaha....