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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
![To travel quickly, killer whales leap out of the water when swimmingâ€â€Âa behaviour kn](https://biology-forums.com/gallery/47/medium_27599_22_04_12_6_51_41.jpeg)
![Killer whales, like this one spotted near Alaska, commonly breach, often lifting their entire bodies](https://biology-forums.com/gallery/47/medium_27599_22_04_12_6_57_26.jpeg)