The Harvard Medical School recently recently released a new study showing that shorter has a 60% greater chance of having a heart attack than one at least 1.85 metres tall,the study said. Earlire studies found a similar correlation in women. Researchers concluded that shorter people have narrower arteries that are more vulnerable to clogging. But physicians emphasized that the main risks for heart attack still comes from things that prople can control: smoking,high cholesterol and high blood pressure.