From Yahoo! News, an article on testosterone therapy, which has been touted as having "anti-aging" benefits. As it turns out, as for human growth hormone, the science is very uncertain: true risks and benefits are not yet known. What is certain is that we should not be looking to these last generation one-size-fits-all chemical therapies for healthy life extension - we should be looking ahead to personalized therapies, stem cell and regenerative medicine. The few trialed therapies in this new branch of medicine have already proven themselves far more effective and useful in fixing specific age-related damage.