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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 recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Defensive mutualism involves species that receive food or shelter in return for providing protection Defensive mutualism involves species that receive food or shelter in return for providing protection
Andy Warhol, Race Riot. Andy Warhol, Race Riot.
The process of learning to read involves physical and socioemotional development, changes in the ... The process of learning to read involves physical and socioemotional development, changes in the ...
Checking gasoline for alcohol involves using a graduated cylinder and adding water to check if the ... Checking gasoline for alcohol involves using a graduated cylinder and adding water to check if the ...
Meiosis involves two complete divisional operations forming four potential sex cells. Meiosis involves two complete divisional operations forming four potential sex cells.
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
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