I have been taking fat burners for as long as I can remember and am now 40 years old. Is it safe to keep taking these into my 40's, where heart issues can be a problem. Seem to be getting tightness in my chest when taking them now. Can fat burners really mess with your heart, even at lower than advised doses.
are you sure the chest tightness is stimulant related and not exertional, since most take stims to work out. if your having chest pain that indicates your heart is being overworked. could be due to many things, like high blood pressure, high cholesterol, clots, atheroscelerosis etc.. if its a continuing problem i would seriously suggest you get a full blood panel to see wear your metabolic markers are at. not trying to scare you and many stims can can arrythmia on their own but its better safe then sorry, since when you increase heart contration and blood flow you get pain, it may indicate something there, or it could just be your too stimulated.
chronic stimulant use can cause adrenal atrophy as the adrenals secrete catecholamines from the medulla which when stimulated, via caffeine, eppies too much can cause too much release resulting in some similar symptoms. plus if your adrenals atrophy your looking at low energy and a host of other problems. i would advise againt using stims for long periods, or at least strong ones as it can cause some of the above problems, and a few others. im not against stims, just when you have chest pains and have been taking them for like 20 years, your asking for trouble especially if you take very little breaks.