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10.3390/nu6020466 Gallicchio L, et al. (2008). Carotenoids and the risk of developing lung cancer: A systematic review.
ajcn.nutrition.org/content/88/2/372.full Higdon J. (2014). Carotenoids.
lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/carotenoids How carotenoids help protect against cancer. (2012).
pcrm.org/health/cancer-resources/diet-cancer/nutrition/how-carotenoids-help-protect-against-cancer Torrey G. (n.d.). Lutein for preventing macular degeneration: Lutein may decrease risk of macular degeneration. macular.org/lutein
在饮食中添加更多富含类胡萝卜素的食物可以增强你的免疫系统和整体健康。虽然类胡萝卜素在维生素A补充剂中是可用的，但食用它们自然会增强它们的抗氧化作用。此外，补充剂如果含有高水平的维生素A可能是危险的，因为如果摄入过多维生素A可能导致身体损伤。在改变你的饮食或服用膳食补充剂之前，先和你的医生谈谈。
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参考文献：
10.3390/nu6020466
ajcn.nutrition.org/content/88/2/372.full Higdon J. (2014). Carotenoids.
lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/carotenoids
pcrm.org/health/cancer-resources/diet-cancer/nutrition/how-carotenoids-help-protect-against-cancer
