Claims for GH as an anti-aging treatment date back to 1990 when the New England Journal of Medicine published a study wherein GH was used to treat 12 men over 60.  At the conclusion of the study, all the men showed statistically significant increases in lean body mass and bone mineral density, while the control group did not. The authors of the study noted that these improvements were the opposite of the changes that would normally occur over a 10- to 20-year aging period. Despite the fact the authors at no time claimed that GH had reversed the aging process itself, their results were misinterpreted as indicating that GH is an effective anti-aging agent.    This has led to organizations such as the controversial American Academy of Anti-Aging Medicine promoting the use of this hormone as an "anti-aging agent". 
If you are on regular medications, have a read through the information that comes with them and speak to your doctor if you have concerns about the medication affecting libido. There are stacks of medications that can affect libido occasionally even making it higher but more often than not, making it low. One type of medication that is commonly known to cause your libido to take a nose dive is anti-depressants. On the plus side, there are many brands and you may be able to switch to something that is more suitable for you. Some medications also cause vaginal dryness making it difficult to achieve proper lubrication. Speak to your doctor straight away if you are ever concerned about any side effects from medicines, including low libido.