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.
1 Dark stool in children and Bleeding symptoms (6 causes). 2  Dark stool in children and Dark coloured stool in elderly (6 causes). 3  Dark stool in children and Dark stool (6 causes). 4  Dark stool in children and Sudden onset of dark coloured stools (6 causes).