May 21, 2011

Biological Reason for Anorexia

1 When Eating Makes You Anxious

While most people finding dieting and losing weight difficult, people with anorexia nervosa can starve themselves, even to death. Researchers cite dopamine, a brain chemical that is released by eating as the cause. In healthy people, dopamine triggers feelings of extreme pleasure in the reward center of the brain. In those with anorexia, dopamine activates the part of the brain that makes people anxious. "This is the first study to demonstrate a biological reason why individuals with anorexia nervosa have a paradoxical response to food," said lead researcher Walter Kaye, MD, UC San Diego. It’s important to note that the study was of people who’d recovered from anorexia for at least a year indicating that anorexia may be due to pre-existing traits, say researchers.

More at Eurekalert.org | Posted 7 years ago by Melody Lesser

Previously: Possible Biologic Cause for Eating Disorders Found

Tags: Anorexia, Anorexia Nervosa, Dopamine, Dopamine Response in the Brain, Eating Disorder, Reward Centers in the Brain, University of California at San Diego, Dr. Walter Kaye

Comment on This | Was this Interesting? Yes! (49%) / No! (51%)

Little Blue Pill Offers Big Hope

2 Animal Studies Show Viagra Lowers MS Symptoms

Animals with a form of multiple sclerosis known as experimental autoimmune encephalomyelitis (EAE) had their clinical symptoms reduced after treatment with Viagra® (sildenafil). Half had their symptoms nearly eliminated on day 8 of treatment. Viagra has been safely used to treat erectile dysfunction in people with multiple sclerosis, a chronic inflammatory central nervous system disease in which the immune system destroys the myelin that maintains the strength of electrical signals as they travel from neuron to neuron via axons. It appears to lower the number of inflammatory cells that enter into the white matter of the spinal cord that damages the myelin which also gives it a chance to regenerate. There is no cure but current treatments manage symptoms and stop its progression.

More at Science Daily | Posted 7 years ago by Kristie Hayes

Previously: MS Activity Linked to Spring and Summer

Tags: Multiple Sclerosis, Myelin, Sildenafil, Viagra®, Experimental Autoimmune Encephalomyelitis in Mice, Autoimmune Diseases, Multiple Sclerosis Treatments, Central Nervous System Diseases

Comment on This | Was this Interesting? Yes! (44%) / No! (56%)

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