Written by Nelson Vergel at ExcelMale.com
A published review of studies attempted to determine, from published studies, the time-course of the effects induced by testosterone replacement therapy from their first manifestation until maximum effects are attained.
This review found that:
- Effects on sexual interest appear after 3 weeks plateauing at 6 weeks, no further increments beyond.
- Changes in erections/ejaculations may require up to 6 months.
- Effects on quality of life manifest within 3-4 weeks, but maximum benefits take longer.
- Effects on depressive mood appear after 3-6 weeks with a maximum after 18-30 weeks.
- First effects on erythropoiesis (increased red blood cells) after 3 months, peaking at 9-12 months.
- Prostate specific antigen and volume rise, marginally, plateauing at 12 months; further increase related to aging rather than therapy.
- Effects on lipids appear after 4 weeks, maximal after 6-12 months. Insulin sensitivity may improve within few days, but effects on glycemic control become evident only after 3-12 months.
- Changes in fat mass, lean body mass and muscle strength occur within 12-16 weeks, stabilize at 6-12 months, but marginally continue to improve over years. Effects oninflammation occur within 3 to 12 weeks.
- Effects on bone detectable after 6 months but continue at least for 3 years.