Maybe. Please forgive this senior physician's frankness. The data on carotenes and lycopenes is so massive, so contradictory, is so tied up with the politics of "healthy diet", and makes so little sense scientifically that your question cannot be answered. In science, the stuff that's really true is generally established quickly. I love eating carrots, but would not spend money supplementing carotene.
Antioxidant power? Beta carotene has been touted as an anti cancer agent for its antioxidant properties. However, in a large prospective cancer prevention trial using it as a supplement in smokers, the incidence of lung cancer was higher in people taking beta carotene. Beware of unsubstantiated claims of certain food supplements since they could cause more harm than good!
Possibly in smokers. Some studies have found high doses of beta carotene in smokers increases lung cancer risk, yet other studies have found it doesn't increase risk. Antioxidants work as a team & the studies showing increased risk gave beta carotene without other antioxidants to balance it. See http://tinyurl.com/p34vo4b It's wiser to take mixed carotenoids & get through diet. If you smoke use caution-better to quit! Read more...
Please explain if it is true that the intake of beta-carotene would decrease blood levels of lutein?
Can I take food which contains provitamin-a/ beta-carotene when I am on accutane? Does it cause side effects?
Yes. You don't need to avoid foods containing vitamin a or carotenoids, but you should avoid vitamin a supplements when taking isotretinoin, as any potential toxic effect of vitamin a may be enhanced. This may result in joint and muscle aches, dry skin, abdominal pain, and some effects on the liver. Read more...