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.
Black stools can also be caused by supplements such as iron or medicines such as Pepto-Bismol. Certain foods, like blueberries or black licorice, can also turn the stool black. Your doctor can tell if there is any blood in the stool by taking a stool sample from the rectum and performing a simple test in the office. If you are having any black or tarry stools, call your doctor right away.