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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.
The FDA recognizes 118 routes of administration.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Medication errors are more common among seriously ill patients than with those with minor conditions.
![Cross-fiber friction to the paraspinal muscles. Friction is created by moving the more superficial ...](https://biology-forums.com/gallery/32/medium_380798_23_08_17_12_14_12_329961407.jpeg)
![Direct pressure to deep rotator muscles using the elbow. Use the elbow tip to apply pressure moving ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_5_40_29_33226810.jpeg)