RadioMD News... I'm John Byrd

Breakthrough new research about what causes Alzheimer's suggests it may actually be caused by a misfiring immune system. With the new information, scientists are hopeful that a more efficient means of treating and controlling the disease can be formulated. Some 5 million Americans are affected by Alzheimer's.

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Snoring can be dangerous for your brain says new findings. Those with untreated sleep apnea have earlier mental decline than those without or people who use a breathing machine to treat their condition. Doctors believe oxygen deprivation to be the cause of the deterioration. Sleep apnea can also cause cardiovascular issues.

And... believe it or not, researchers have finally figured out what causes that noise when you crack your knuckles. The sound is created by the rapid creation of a vacuum in the fluid inside the joints. Contrary to legend, research has not found cracking your knuckles damages them. So... snap, crackle & pop to your heart's desire.

For RadioMD News, I'm John Byrd. For health talk 24/7, log on to RadioMD.com