Monounsaturated fat helps lower ldl and raise high-density lipoprotein ( hdl ) , the " good " cholesterol .
单链不饱和脂肪有助于降低ldl,提升高密度脂蛋白(hdl),一种“好”的胆固醇。
As opposed to low-density lipoprotein ( ldl ) cholesterol that can build up in artery walls , making them hard and narrow , hdl cholesterol takes excess cholesterol back to the liver .
Several studies indicate that replacement of food high in saturated fatty acids with polyunsaturated or monounsaturated fat rich foods reduces the total cholesterol and low density lipoprotein ( ldl ) cholesterol .
But he says there is no dispute about low-density lipoprotein , or ldl . Ldl , the so-called bad cholesterol , causes a buildup of fatty substances inside arteries and increases the risk of heart attack .
What 's more , he adds , physical activity helps reduce the particle size of low-density lipoprotein ( ldl ) or so-called bad cholesterol in the blood , and increase amounts of high-density lipoprotein ( hdl ) , aka good cholesterol , which translates to less artery clogging .
The immune system 's white blood cells rush to the arteries when the blood vessels are besieged by low density lipoprotein , or ldl -- the ' bad ' cholesterol . The cells embed themselves in the artery wall and gobble up the invading cholesterol , causing damage to the arteries that can lead to heart attack or stroke .
What 's more he adds physical activity helps reduce the particle size of low-density lipoprotein ( ldl ) or so-called bad cholesterol in the blood and increase amounts of high-density lipoprotein ( hdl ) akagood cholesterol which translates to less artery clogging .
But marc hamilton ph. d.one of katzmarkzyk 's colleagues suspects it has to do with an enzyme called lipoprotein lipase ( lpl ) which breaks down fat in the bloodstream and turns it into energy .