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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
![Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_38_22_1981973.jpeg)
![The bobcat population has seen declines in the American Midwest, but is generally stable and healthy](https://biology-forums.com/gallery/47/medium_27638_22_04_12_8_48_59.jpeg)