I'm 32 with decreased testosterone & nomal fsh and lh levels. what should i do?

Talk to your doc!: Are your 32yo or 51yo? How low is low? What made you check in first place? If you're within normal limits, then most likely, normal FSH & LH mean that your body doesn't want any more. But if your T is truly low (below lower limit of normal), your doc can check for hemochromatosis & for pituitary adenoma, most commonly prolactinoma. In the meantime, healthy nutrition & regular exercise can help.