hormone increases life span 40%

http://www.dailymail.co.uk/health/article-3400205/Have-scientists-discovered-elixir-youth-Hormone-extends-lifespan-40-protecting-immune-against-ravages-age.html

• FGF21 is produced by the thymus gland and extends lifespan by 40%
• Scientists discovered it protects the immune system from effects of age
• Hope it could help treat elderly, obesity, cancer and type 2 diabetes