1 https://www.nih.gov/news-events/nih-research-matters/understanding-how-testosterone-affects-men 2 https://www.urologyhealth.org/urologic-conditions/low-testosterone
3 https://www.nhs.uk/conditions/male-menopause/
4 https://pubmed.ncbi.nlm.nih.gov/17051372/ https://pubmed.ncbi.nlm.nih.gov/9660159/ https://pubmed.ncbi.nlm.nih.gov/17051372/
5 https://www.nhs.uk/conditions/vitamins-and-minerals/others/
6 https://pubmed.ncbi.nlm.nih.gov/20352370/
7 https://www.nhs.uk/live-well/eat-well/eggs-nutrition/
8 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3955331/
9 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3770848/
10 https://www.nhs.uk/conditions/vitamins-and-minerals/others/
11 https://www.endocrine-abstracts.org/ea/0028/ea0028p313
12 https://www.nature.com/articles/3901570
13 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3958794/
14 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316093/
15 https://www.nhs.uk/live-well/eat-well/meat-nutrition/
16 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4180710/
17 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4271636/
18 https://www.eurekalert.org/pub_releases/2020-01/wkh-ldl011020.php
19 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6660671/
20 https://www.drinkaware.co.uk/facts/health-effects-of-alcohol/alcohol-and-gender/alcohol-and-men 21 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270274/