True or False: Eating Carrots Improves Vision
Evidence Against the Health Claim
- 3000 IU (International Units)–adult males (age 19+)
- 2310 IU–adult females (age 19+)
- 2000 IU–children (age 9-13)
- ½ cup of boiled carrot slices–13,418 IU
- 1 cup of canned, chunky vegetable soup–5820 IU
- ½ cup of peas–1050 IU
- 1 cup of whole milk–249 IU
Evidence for the Health Claim
Dietary supplement fact sheet: vitamin A and carotenoids. Office of Dietary Supplements, National Institutes of Health website. Available at: http://ods.od.nih.gov/factsheets/vitamina.asp . Accessed June 8, 2006.
Haskell MJ, Pandey P, Graham JM, et al. Recovery from impaired dark adaptation in nightblind pregnant Nepali women who receive small daily doses of vitamin A as amaranth leaves, carrots, goat liver, vitamin A-fortified rice, or retinyl palmitate. Am J Clin Nutr . 2005 Feb;81(2):461-471.
Kruszelnicki, KS. Great moments in science–carrots and night vision. Available at: http://www.abc.net.au/science/k2/moments/s1392430.htm . Accessed June 8, 2006.
Myths about Vision and Eyeglasses. Health and Age website. Available at: http://www.healthandage.com/Home/%21gm%3D20%21gsq%3Dmyths%21gid2=3028 . Accessed June 7, 2006.
Takita Y, Ichimiya M, Hamamoto Y, et al. A case of carotenemia associated with ingestion of nutrient supplements. J Dermatol . 2006 Feb;33(2):132-4.
There's hope for people with age-related macular degeneration. American Academy of Ophthalmology website. Available at: http://www.aao.org/news/release/20060310.cfm . Accessed June 7, 2006.
van Leeuwen R, Boekhoorn S, Vingerling JR, et al. Dietary intake of antioxidants and risk of age-related macular degeneration. JAMA . 2005;294(24):3101-3107.
Image Credit: Nucleus Communications, Inc.
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