THE TIMES
Sunlight and cancer
From Dr Richard Petty
Sir, There is now positive evidence that an important factor in the aetiology of prostate cancer is lack of vitamin D. Little vitamin D is derived from food; most is formed in the skin in response to ultra violet light. Experts recommend adequate vitamin D nutrition should be a priority for men of all ages. To achieve this, a daily exposure to sunlight of 20 minutes is required.
It is unfortunate that this is not taken into consideration by Cancer Research UK in its SunSmart campaign (report and leading article, March 23). There may be 1,600 deaths annually from melanoma, but there are more than 10,000 deaths annually from prostate cancer.
Yours faithfully
RICHARD PETTY
(Medical Director)
WellMan Clinic
32 Weymouth Street,
W1G 7BU
March 23, 2005
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Previously this very marked difference in the incidence of prostate cancer between northern and more southerly latitudes was put down to the greater fat content in northern diets.
Undoubtedly cholesterol does play some part in the genesis of prostate cancer, but the evidence now available as to the role of vitamin D is so powerful that it is proposed by some authorities that it should be used not only to prevent prostate cancer, but also to treat it.
The recommended dosage for vitamin D supplementation is between 1000 and 2000 iu daily. Unfortunately a suitable formulation is not available in the UK and so The WellMan Clinic is importing a pure 1000 iu preparation.
The cost is £24 for 180 capsules. |