Like calcium, taking in too much iron supplements can make it hard to go. That’s because high concentrations of iron can slow down your colon’s motility, says Dr Schey. Guys should take in 8mg of iron a day, and most do a good job getting all they need from their diets (think lean meats, seafood, spinach and beans). In fact, if you’re coming up as iron deficient in your lab work, that’s not something for which you should just blindly pop pills.
“Iron- deficiency anemia in a man really requires an evaluation,” he says. It can signal gastrointestinal bleeding, so it’s important that your doc is on the case.