Is there a way to increase free testosterone and/ or lower shbg?

Lose weight: Proper diet and exercise and weight loss should help improve testosterone levels and sexual function. There are many other health benefits as well, so do it.

Yes: As dr. Shulman noted, lifestyle modification is the best & safest way to increase free t & lower shbg. However, for those who have enough total t but not enough free t, body builders have demonstrated that use of aromatase inhibitors & serms can help do this, too. That's why these drugs are banned in amateur competitions like olympics. Bottom line: eat right & exercise regularly.