About one in 500 Americans is genetically deficient in these structures, called LDL receptors, and, as a result, develops astronomically high levels of LDL cholesterol.

• 大约每五百个美国人中就有一个人的这个结构有遗传缺陷，这就是为什么他们的LDL胆固醇含量会达到这样一个天文数字。