Ive been taking a 65mg iron supplement daily for the past 8 years without any noticeable adverse effects. i recently learned about iron overdose and excess iron storage in the organs. should i be concerned even though i feel no adverse effects?

You are partly right. Iron supplements are not recommended for the males because we can easily get enough iron in the normal diet . Women, because of their monthly periods lose blood, so they more often need iron supplements particularly during pregnancy. I would advise that you stop taking iron as it is indeed stored in the body and excess storage can cause organ damage(after many years of use).