*Most of them still strongly believe that increasing their testosterone levels will improve their libido

*This hormone isn’t the only biological factor with clear, substantial power over our libidos

*Notably, estrogen, although often characterized as the female sex hormone, plays a major role in maintaining male libido

 *Estrogen and testosterone actually balance and support each other in any body

*Complete suppression of estrogen is a surefire way to destroy a man's libido 

*Dopamine, serotonin, and oxytocin all play a role in libido, too

*Psychological factors like stress and anxiety can lower a person’s libido, no matter how robust their levels of testosterone, estrogen, or any other biological element may be. So can social factors, like relationship troubles

*Even personal beliefs or values about sex and relationships can have a top-down effect on our bodies

*Libido is very complex, and definitely poorly understood

*Testosterone is a threshold hormone. Our bodies need a certain amount for normal functions, but beyond that, there is not necessarily any additional benefit

*The effects of testosterone on libido are incredibly mixed and complicated

*Any number of chronic or acute health issues can affect libido, directly or indirectly. Notably, conditions including diabetes, kidney and liver diseases, recent weight increases, thyroid disorders, and even sleep apnea can all cause a decrease in testosterone, and thus libido, and that decrease can often be reversed by treating this underlying health issue

*Many common drugs, from antidepressants to anticonvulsants, cancer treatments to contraceptives, and more, can all lower libido themselves

*Focus on improving your exercise regimen, hydration, and sleep hygiene These are the low-hanging fruit of libido health

*The hormone works best for people who have the rest of their health in order