| http://www.w3.org/ns/prov#value | - ent Rachel Wright.Charities cautiously welcomed the study but warned too much vitamin D could harm the kidneys and liver, she said.The ???natural??? form of the vitamin, called D3, is normally produced in the skin after exposure to sunlight, but is also obtained from certain foods such as oily fish, margarine and meat.The research, done at the University of California in San Diego, looked at the r
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