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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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There are 60,000 miles of blood vessels in every adult human.

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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

(A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone (A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone
Bone density test. Bone density test.
A simple diagram of bone marrow progenitors. All of the cells listed can be transformed to become a ... A simple diagram of bone marrow progenitors. All of the cells listed can be transformed to become a ...
Edentulous patient with pieces of bone that became necrotic and continued to slough off after tooth ... Edentulous patient with pieces of bone that became necrotic and continued to slough off after tooth ...
Healthy Bone (left) vs Weakened Bone (right) Healthy Bone (left) vs Weakened Bone (right)
Bone Surface Markings: Head Bone Surface Markings: Head
Video: Krebs cycle : Formation of acetyl coenzyme A and Electron transport chain

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