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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
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.
![Pericardial effusion: A, normal pericardial sac; B, pericardial sac with excess fluid possibly causi](https://biology-forums.com/gallery/47/medium_18099_24_10_12_3_03_45.jpeg)
![Amniocentesis. In this examination procedure, amniotic fluid is aspirated with a syringe that is ins](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_29_11_9695143.jpeg)