Talk:Β-Carotene

Stomach cancer
Zhou concluded that dietary BC may be inversely associated with risk of stomach cancer, and may not. Li reported a benefit for higher dietary intake, but noted that blood concentration of BC showed no such relationship. Druesne-Pecollo reported stomach cancer UP in those supplemented with 20-30 mg/day, which gets back to the whole J-curve thing: none bad, a lot bad, a modest amount good.

Zhou Y, Wang T, Meng Q, Zhai S. Association of carotenoids with risk of gastric cancer: A meta-analysis. Clin Nutr. 2016 Feb;35(1):109-16. doi: 10.1016/j.clnu.2015.02.003. .

Li P, Zhang H, Chen J, Shi Y, Cai J, Yang J, Wu Y. Association between dietary antioxidant vitamins intake/blood level and risk of gastric cancer. Int J Cancer. 2014 Sep 15;135(6):1444-53. doi: 10.1002/ijc.28777. .

Druesne-Pecollo N, Latino-Martel P, Norat T, Barrandon E, Bertrais S, Galan P, Hercberg S. Beta-carotene supplementation and cancer risk: a systematic review and metaanalysis of randomized controlled trials. Int J Cancer. 2010 Jul 1;127(1):172-84. doi: 10.1002/ijc.25008. Review. .

β-Carotene and lung cancer in smokers
This section should be changed. The significant factor was found to be the FORM of beta-carotene, natural vs. synthetic. Supplementation with natural beta-carotene did not increase cancer risk etc

In general, this article could use a section explaining the forms of beta-carotene. Drsruli (talk) 19:11, 4 January 2023 (UTC)