Vitamin Supplement Study, Inconclusive; May Cause Prostate Cancer, Prevent Breast Cancer

OK, so vitamins may cause prostate cancer. But vitamins may prevent breast cancer. Uh, does that mean men should convert to women if they take vitamins? 

http://www.dailymail.co.uk/health/article-2467729/Taking-vitamin-pills-daily-cut-breast-cancer-death-rate-30.html

Taking vitamin pills daily could 'cut breast cancer death rate by 30%'
Research found multivitamins may boost older women’s chances of beating the disease - developed by 48,000 in the UK every year
Taking the pills daily cut death rates by 30 per cent among post-menopausal breast cancer sufferers, research has found
Scientists at the Albert Einstein College of Medicine, New York, studied 8,000 women aged 50 to 79 who had been diagnosed with breast cancer
By STEPHEN ADAMS
Daily Mail (UK)
PUBLISHED: 16:00 EST, 19 October 2013 | UPDATED: 16:02 EST, 19 October 2013

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http://www.dailymail.co.uk/health/article-2466592/Do-high-doses-vitamin-C-raise-prostate-cancer-risk.html

Do high doses of vitamin C raise prostate cancer risk? Study shows popping too many supplements could give men tumours
Study of followed the health of 48,000 men aged 40-75 over 22 years
It found that men who take large amounts of supplements risk disease
The chance of developing prostate cancer increased by 28 per cent
The finds were published in the International Journal of Cancer
By PAT HAGAN
Daily Mail (UK)
PUBLISHED: 18:07 EST, 18 October 2013 | UPDATED: 21:19 EST, 18 October 2013