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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
![Chimpanzees in nearby Mahale National Park practice a different grooming style: they clasp hands whi](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_24_204391100.jpeg)
![Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap](https://biology-forums.com/gallery/47/medium_375552_19_08_15_9_26_03_223392320.jpeg)