The terms “overweight” and “obese” have specific definitions in healthcare. Overweight and obese are both terms for a range of weight that are greater than what is considered healthy for a given height. 1 For adults, overweight and obesity ranges are determined by using weight and height to calculate a number called the body mass index (BMI). 3 BMI is used because it correlates with the amount of body fat. BMI is also important because the use of many weight loss drugs are based on a whether a person has reached a certain BMI.
Other significant adverse effects of testosterone supplementation include acceleration of pre-existing prostate cancer growth in individuals who have undergone androgen deprivation; increased hematocrit , which can require venipuncture in order to treat; and, exacerbation of sleep apnea .  Adverse effects may also include minor side-effects such as acne and oily skin, as well as, significant hair loss and/or thinning of the hair, which may be prevented with 5-alpha reductase inhibitors ordinarily used for the treatment of benign prostatic hyperplasia , such as finasteride .  Exogenous testosterone may also cause suppression of spermatogenesis , leading to, in some cases, infertility.  It is recommended that physicians screen for prostate cancer with a digital rectal exam and prostate-specific antigen (PSA) level before starting therapy, and monitor PSA and hematocrit levels closely during therapy.