http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. (Medical Xpress)—There's no need to panic if you didn't get a solid eight hours of beauty sleep last night. According to new University of Sydney research, sleep duration naturally waxes and wanes over a period of days regardless of individual lifestyle, timing of sleep or waking, and social and environmental influences. http://medicalxpress.com/news/2013-01-previously-unknown-pattern-revealed.html Health Tue, 29 Jan 2013 06:35:03 EST news278663593 Infants who have started crawling wake up more often at night compared to the period before the crawling, reveals a new study by Dr. Dina Cohen of the University of Haifa's Department of Counseling and Human Development. http://medicalxpress.com/news/2013-01-baby-night.html Pediatrics Wed, 02 Jan 2013 10:53:03 EST news276346371 A new study suggests that increasing the amount of sleep that teenagers get could improve their insulin resistance and prevent the future onset of diabetes. http://medicalxpress.com/news/2012-09-lack-insulin-resistance-teens.html Health Sat, 29 Sep 2012 00:00:02 EST news268062963 Daily physical activity may reduce the risk of Alzheimer's disease and cognitive decline, even in people over the age of 80, according to a new study by neurological researchers from Rush University Medical Center that will be published in the online issue of Neurology, the medical journal of the American Academy of Neurology on April 18. http://medicalxpress.com/news/2012-04-daily-physical-alzheimer-disease-age.html Alzheimer's disease & dementia Wed, 18 Apr 2012 16:00:01 EST news253981411