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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
Blood is approximately twice as thick as water because of the cells and other components found in it.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.