1.) a poor diet 2.) smoking 3.) lack of excercise 4.) Alcohol Thanks for any answers! If you know the answer to any of these it would be really great :)
Biology - 2 Answers
Random Answers, Critics, Comments, Opinions :
1 :
All affect your coronary arteries. The arteries become plugged with cholesterol which decreases blood supply causing the cells of the heart to decrease in function or some could die. If enough die, you have a myocardial infarction (heart attack). The arteries also lose their elasticity so when the pulse of blood goes through they cannot expand to absorb the increased pressure. If the stress is great enough and artery can stretch and deform, called an aneurism, and could possibly burst.
2 :
excess weight is correlated with heart disease, the exact mechanisms are not known. However excess weight leads to high blood pressure to support your added mass. High blood pressure leads to damage to blood vessel walls (just like a ton of water going through a hose can break it). the damage leads to immune cells being attracted to the area and forming a plaque, high blood pressure can cause the plaque to be damaged and form a clot which can then break off, clog an artery (especially in another plaqe which narrows blood vessels). The lack of oxygen kills all the cells in the area supported by the blocked blood vessel. If this happens in the brain it leads to a stroke, in the pancreas - pancreatitis, in the intestine - intestinal necrosis. If it happens in a heart blood vessel (where pressure if very high) it causes a heart attack. Smoking leads to epithelial disease, or a lack of elasticity of the blood vessels, this causes high blood pressure to be more damaging as flexible blood vessels can bounce back from physical assaults and hard ones cannot, as well a hard vessel has water shoot through it faster than a flexible one. lack of exercise, likewise leads to weight gain, also, has been associated with lower cholesterol. Cholesterol also binds to blood vessels, and lead to immune cells aggregating there and forming a plaque. This is aggravated by high blood pressure. Alcohol also reduces the elasticity of blood vessesl (epithelial function) in the same way as smoking
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