the VOA Special English Health Report.
D helps bones and muscles grow strong and healthy. Low levels of vitamin D can
lead to problems such as rickets, a deformity mainly found in children.
Osteoporosis, the thinning of bone, is a common problem as people, especially
women, get older.
and more research is suggesting that vitamin D might also help prevent many
easiest way to get vitamin D is from sunlight. The sun's ultraviolet rays react
with skin cells to produce vitamin D. But many people worry about getting skin
cancer and skin damage from the sun. As a result they cover their skin or wear
sunblock or stay out of the sun.
darker skinned people produce less vitamin D than lighter skinned people.
Production also decreases in older people and those living in northern areas
that get less sunlight.
foods naturally contain vitamin D. Foods high in this vitamin include oily fish
such as salmon, tuna and mackerel, and fish liver oils.
University researchers reported last year that farmed salmon had only about
one-fourth as much vitamin D as wild salmon.
amounts of D are found in beef liver, cheese and egg yolks. And some people
take dietary supplements containing the vitamin. But most of the vitamin D in
the American diet comes from foods with D added, like milk.
nineteen ninety-seven, the United States Institute of Medicine established levels
for how much vitamin D healthy people need. It set the daily amount at two
hundred international units from birth through age fifty. It set the level at
four hundred I.U.s through age seventy, and six hundred for age seventy-one and
groups say these amounts are not high enough. They are hoping that the new
research findings will lead to new recommendations.
in the last several years has shown that low levels of vitamin D may increase
the risk of heart attacks in men and deaths from some cancers. Other studies
have shown that people with rheumatic diseases often have low levels of vitamin
doctors are now having their patients tested for their vitamin D levels. But as
research continues, some experts worry that if people take too much vitamin D,
it might act as a poison. Also, skin doctors warn people to be careful with sun
exposure because of the risk of skin cancer.
that’s the VOA Special English Health Report, written by Caty Weaver. I’m Steve