Stress and Your Heart. More research is needed to determine how stress contributes to heart disease â the leading killer of Americans. But stress may affect behaviors and factors that increase heart disease risk: high blood pressure and cholesterol levels, smoking, physical inactivity and overeating.
Black or dark stools are a common side effect that may be the harmless result of unabsorbed iron. Whether you are taking iron supplements alone or a multivitamin with iron, you may experience this. Check with your doctor or healthcare provider to find the cause of black stools.
Overdosing on prenatal vitamins can cause internal bleeding. Internal bleeding can cause stools to turn tarry and sticky. If you have any question about whether your dark stool is abnormal, see your doctor for a test to rule out blood in the stool. If prenatal vitamins cause unpleasant or worrisome symptoms, itâs tempting to skip taking them.