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Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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

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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Major veins of the systemic circulation. Major veins of the systemic circulation.
Systemic arteries: descending aorta Systemic arteries: descending aorta
Atherosclerosis in the coronary arteries Atherosclerosis in the coronary arteries
Bypass surgery of coronary blocked arteries. Bypass surgery of coronary blocked arteries.
How skeletal muscle activity encourages blood flow through veins How skeletal muscle activity encourages blood flow through veins
Two ways of treating blocked coronary arteries, the main cause of heart attacks in older adults. Two ways of treating blocked coronary arteries, the main cause of heart attacks in older adults.
Video: Mutations and translation

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