Irreversible Changes
- deepening of the voice
- growth of facial and body hair
- male pattern baldness [in some individuals]
- an enlargement of genitalia
- growth spurt and closure of growth plates if given before the end of puberty
- possible shrinking and/or softening of
breasts, although this is due to changes in fat tissueReversible Changes
- increased libido
- redistribution of body fat
- cessation of ovulation and menstruation
- further muscle development [especially upper body]
- increased sweat and changes in body odor
- prominence of veins and coarser skin
- acne [especially in the first few years of therapy]
- alterations in blood lipids [chloesterol and triglycerides]
- increased red blood cell count
[source: NT; chart unknown]
There are no rules to how long you should be on HRT. It all depends on your preference and needs. If you have a doctor talk to them about what you want out of HRT and be aware of the changes that will return to the state they were before HRT.