#**Fixes/Demographics/Other data**
Ideally, you'd just add testosterone to the birth control pill to prevent this. But, this is impossible, because testosterone is a schedule III substance, which is probably due to congress caring more about cheating in sports than about your hormonal effectiveness. (Historically, they're not so good on regular birth control either.)
Since TRT is almost never prescribed for women, DHEA (the link below) at 50-75mg/day is the next best thing. (
http://www.ncbi.nlm.nih.gov/pubmed/23944295) DHEA will not do much for you if you are not using hormonal birth control and can in fact have negative side, but if you *are* using hormonal birth control your testosterone levels are probably screwed, see:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845679/ I'm sure this is something most women on birth control would never think is an issue, but it is, and 40-50% of the sexually active female population is in this same predicament.
http://www.cdc.gov/nchs/data/nhsr/nhsr060.pdf This source puts oral hormone pill use at a median of 40% for contracepting women in the 20-29 age range and notes that **bachelor's degree holders are 3x more likely to use pill contraceptives and white women are 2x as likely to use this method than other races**, so with the default rate of pill use being what it is a staggering majority of Austin or Boulder's sexually active middle class female 20somethings could be in chronic testosterone deficiency.
Hormonal IUDs release hormone specifically into the uterus to avoid systemic circulation.
http://www.ncbi.nlm.nih.gov/pubmed/10326889 This more or less establishes that the effect is local and other hormone levels will not be as effected as they would be by a pill or implant or injection with systemic effects, but be careful: the undesirable hormonal effects still happens with implants like Norplant, so if you want non-systemic effects it'd have to be specifically IUD.
http://www.ncbi.nlm.nih.gov/pubmed/2946553 