The raison d'etre of this website is to provide you with hard scientific information which may help you make informed decisions in your quest for health (so far I have blogged concise summaries of over 1,500 scientific studies and have had three books published).

My research is mainly focused on the effects of cholesterol, saturated fat and statin drugs on health. If you know anyone who is worried about their cholesterol levels and heart disease, or has been told to take statin drugs you could send them a link to this website, and to my statin or cholesterol or heart disease books.

David Evans

Independent Health Researcher

Monday, 1 December 2014

Vasectomy is associated with an increased incidence of lethal prostate cancer.

This study was published in the Journal of Clinical Oncology 2014 Jul 7

Study title and authors:
Vasectomy and Risk of Aggressive Prostate Cancer: A 24-Year Follow-Up Study.
Siddiqui MM, Wilson KM, Epstein MM, Rider JR, Martin NE, Stampfer MJ, Giovannucci EL, Mucci LA.
Harvard School of Public Health

This study can be accessed at: http://www.ncbi.nlm.nih.gov/pubmed/25002716

This study investigated the association between vasectomy and prostate cancer risk. The study included 49,405 men, aged 40 to 75 years, who were followed for 24 years.

The study found:
(a) Men who had undergone vasectomy had a 10% increased risk of prostate cancer compared to men who had not had a vasectomy.
(b) Men who had undergone vasectomy had a 22% increased risk of high-grade prostate cancer compared to men who had not had a vasectomy.
(c) Men who had undergone vasectomy had a 19% increased risk of death or distant metastasis compared to men who had not had a vasectomy. (Distant metastasis refers to cancer that has spread from the original tumour to distant organs or distant lymph nodes).