[header] How to increase testosterone levels naturally [title] Consult your doctor for a yearly physical. [step] Ask for a detailed analysis of your weight. If you are overweight or obese, this could be the cause of a drop in testosterone. 
[substeps] Obese people secrete more aromatase, an enzyme that works to convert testosterone to estrogen. Your metabolism will continue to decrease as your body produces more aromatase, making the problem worse.