Over thousands of years, most forests in the eastern United States evolved with frequent fire, which promoted tree species and ecosystems that were both fire and drought resistant. In little more than a century, humans upset that balance, suggest researchers, who blame the change, in part, on the well-meaning efforts of Smokey Bear.
Green tea is touted for its many health benefits as a powerful antioxidant, but experiments in a laboratory mouse model of inflammatory bowel disease suggest that consuming green tea along with dietary iron may actually lessen green tea’s benefits.
Researchers seeking to better understand how our genes contribute to stroke risk have completed what is believed to be the largest and most comprehensive review of the human genome to identify genes that predispose people to ischemic stroke, the cause of approximately 85 percent of all stroke cases.
A study out today provides new insight into how the brains of drug addicts may be wired differently. The findings, which appear in the journal Psychopharmacology, show that while drug users have very strong motivation to seek out “rewards,” they exhibit an impaired ability to adjust their behavior and are less fulfilled once they have achieved what they desire. Addressing this disconnect between the craving for a drug and the ability to regulate behavior may be one of the keys to breaking the cycle of addiction.
Scientists at the University of Rochester School of Medicine and Dentistry have discovered a way to make a nasal spray flu vaccine safer for those who are at greatest risk of catching the flu, particularly infants under the age of 2. The work is early and a long way from being applied in people, but offers promise for a vaccine that could better protect the most vulnerable.
Regular exercise improves balance for people with dementia and can reduce dependence on assistance. This according to new research on healthcare for people suffering from dementia conducted at Umeå University, which has now been published in the Journal of the American Geriatrics Society.
Exercise training for patients with pulmonary hypertension was shown to be safe and to improve quality of life, according to an analysis by UT Southwestern Medical Center cardiologists of studies involving more than 400 participants.