Post by Peter Duncanson [BrE]
[quoted text muted]
yellow peppers as a good source of something (beta carotene???) that
would be helpful to his eyesight. I have no idea whether this is an old
There may be some truth in it.
The human body converts beta-carotene into vitamin A (retinol) -
beta-carotene is a precursor of vitamin A. We need vitamin A for
healthy skin and mucus membranes, our immune system, and good eye
health and vision.
Vitamin A can be sourced from the food we eat, through
beta-carotene, for example, or in supplement form. The advantage of
dietary beta-carotene is that the body only converts as much as it
Excess vitamin A is toxic. Toxic vitamin A levels can occur if you
consume too many supplements.
Vitamin A obtained from colorful fruits and vegetables is in the
form of "provitamin A" carotenoids, which are converted to retinol by
the body after the food is ingested. Good food sources of provitamin A
carotenoids include carrots, sweet potatoes, spinach, kale and
Beta-carotene is one of the most prevalent and effective provitamin A
Eye Benefits Of Vitamin A And Beta-Carotene
Because vitamin A helps protect the surface of the eye (cornea), it is
essential for good vision.
Studies show vitamin A eye drops are effective for the treatment of dry
eyes. In fact, one study found that over-the-counter lubricating eye
drops containing vitamin A were as effective for the treatment of dry
eye syndrome as more expensive prescription eye drops formulated for dry
Vitamin A eye drops also have been shown effective for the treatment of
a specific type of eye inflammation called superior limbic
Vitamin A, at least when in combination with other antioxidant vitamins,
also appears to play a role in decreasing the risk of vision loss from
macular degeneration (AMD). In the landmark Age-Related Eye Disease
Study (AREDS) sponsored by the National Eye Institute, people with mild
or moderate AMD who took a daily multivitamin that included vitamin A
(as beta-carotene), vitamin C, vitamin E, zinc and copper had a 25
percent reduced risk of advanced AMD during a six-year period."