|Testosterone is a steroid hormone secreted in large amounts by the testicles of males and the ovaries of females. Adrenal glands also secrete testosterone in small amounts. It is the major male sex hormone which plays a key role in the development of testis and prostate organs. Secondary sexual characteristics such as increased muscle, bone mass, and body hair growth are promoted through the release of testosterone. It is also essential in the prevention of osteoporosis.The top open access journals are peer reviewed scholarly journals of Journal of Autacoids & Hormones. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.