Because the sex drive mechanism does not solely originate in blood chemistry, a person's brain also plays a contributing factor. In a sense, a person's blood chemistry and mind work together to create sex drive and desire. A person's brain or mind is more powerful than most people realize. For instance, people who are suffering from depression, or whose creative impulses are being impaired due to health or outside forces, often lack a strong sex drive. Once these conditions have been corrected or stabilized, over time an individual's sex drive often returns or increases.
Strong medications are one of the outside forces previously mentioned which can effect sex drive.
Sometimes this has to be accepted, however in other circumstances a physician can prescribe a medication which treats the medical condition but has less of an impact on sex drive. Don't take matters into your own hands, talk with your physician about this important situation if you believe it affects you. A change in hormones may bring about a short-term change, however as blood chemistry levels stabilize, so too should an individual's libido. If it does not, this is a matter that should be discussed with a physician. Like non-transgender persons, age also effects a transgender person's sex drive.