Magnesium L-Threonate 270 CapsulesAs you grow older, your body becomes less efficient in absorbing important vitamins and minerals. So, despite a healthy diet rich in fresh organic vegetables, you may still come up short in certain nutrients. One such mineral is magnesium. Experts believe that as many as 80% of Americans dont get enough. Because there are no reliable lab tests for magnesium, you have no way of knowing where you stand. Fatigue and weakness may be your only clues that