What was considered a sign of wealth in the old days, is now a threat of diseases. Overweight and obesity are unnecessary fat buildup, which can be measured by the body mass index known as BMI. The purpose of BMI is to measure the total body fat and based on that the possible risk of diseases.[1] Unfortunately, the number of obese men is increasing worldwide.[2] US National Library of Medicine and National Institutes of Health says: “Reduced semen quality is a universal trend in the last few decades due to dramatic changes in the lifestyle of civilized communities around the world“.[3]
There are 7 categories of BMI:
[1]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5922227/?fbclid=IwAR2ilw6mbiuxjL5TOKX5YZDxWWPbcYIxtRYxJR5ad-OpG_bKiZrxQeKt2A4#b0420
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/ introduction
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/#CIT0003 3. Jensen TK, Andersson AM, Jørgensen N, Andersen AG, Carlsen E, Petersen JH, Skakkebaek NE. Body mass index in relation to semen quality and reproductive hormones among 1,558 Danish men. Fertil Steril. 2004;82:863–870. [PubMed] [Google Scholar]
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[6] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/#CIT0003
[7] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/#CIT0003 1. Stephen EH, Chandra A. Declining estimates of infertility in the United States: 1982–2002. Fertil Steril. 2006;86:516–523. [PubMed] [Google Scholar]
[8] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408383/#CIT0001
[9] https://www.huffpost.com/entry/exercise-vs-diet-for-weight-loss_n_5207271