Ecstasy is an illicit recreational drug popular among young people, according to background information in the article. Research in both humans and animals suggests that the drug can harm the brain. Ecstasy may damage nerve cells that respond to the hormone serotonin, which is involved in mood, thinking, learning and memory.
What did dinosaurs hear? Probably a lot of low frequency sounds, like the heavy footsteps of another dinosaur, if University of Maryland professor Robert Dooling and his colleagues are right. What they likely couldn't hear were the high pitched sounds that birds make.
This diagram illustrates the relationship among archosaurs, which includes dinosaurs, crocodiles and birds. The drawings are of the inner ear structure of the different species. The numbers to the left are the time scale in million years. Today's birds are the closest living relatives of the extinct dinosaurs. Credit: University of Maryland
A natural compound found in blueberries, tea, grapes, and cocoa enhances memory in mice, according to newly published research. This effect increased further when mice also exercised regularly.
"This finding is an important advance because it identifies a single natural chemical with memory-enhancing effects, suggesting that it may be possible to optimize brain function by combining exercise and dietary supplementation," says Mark Mattson, PhD, at the National Institute on Aging.
People whose blood shows signs of inflammation are more likely to later develop Alzheimer's disease than people with no signs of inflammation, according to a new study.
The study, which is part of the larger Framingham Heart Study, involved 691 healthy people with an average age of 79. Blood tests determined whether the participants had signs of inflammation. Then the participants were followed for an average of seven years. During that time, 44 of the participants developed Alzheimer's disease.
Early-stage research has found that a new gene therapy can nearly eliminate arthritis pain, and significantly reduce long-term damage to the affected joints, according to a study published today in the journal Arthritis and Rheumatism.
While the study was done in mice, they are the first genetically engineered to develop osteoarthritis like humans, with the same genetic predisposition that makes some more likely to develop the disease, the authors said. If all goes well with a follow-up study currently underway, researchers will apply to the U.S. Food and Drug Administration for permission to begin human trials next year.
Botox is not just for keeping aging actresses looking eerily young any more. Injecting botulinum toxin A, or Botox, into the prostate gland of men with enlarged prostates eased symptoms and improved quality of life for up to a year after the procedure.
The study was based on 37 men with benign prostatic hyperplasia (BPH).
Not only does exercise make most people feel better and perform physical tasks better, it now appears that exercise – specifically, resistance training -- actually rejuvenates muscle tissue in healthy senior citizens.
A recent study, co-led by Simon Melov and Mark Tarnopolsky, involved before and after analysis of gene expression profiles in tissue samples taken from 25 healthy older men and women who underwent six months of twice weekly resistance training, compared to a similar analysis of tissue samples taken from younger healthy men and women.
As the Earth’s temperatures continue to rise, we can expect a signficant change in infectious disease patterns around the globe. Just exactly what those changes will be remains unclear, but scientists agree they will not be for the good.
"Environmental changes have always been associated with the appearance of new diseases or the arrival of old diseases in new places. With more changes, we can expect more surprises," says Stephen Morse of Columbia University.
Applying topical retinol to the skin appears to improve the wrinkles associated with natural aging and may help to promote the production of skin-building compounds, according to a report in the May issue of Archives of Dermatology.
The wrinkles and brown spots associated with aging appear first and most prominently on skin exposed to the sun, according to background information in the article.
In people with mild cognitive impairment, up to one drink of alcohol a day may slow their progression to dementia, according to a study published in the May 22, 2007, issue of Neurology®. Mild cognitive impairment is a transitional stage between normal aging and dementia that is used to classify people with mild memory or cognitive problems and no significant disability.
Researchers evaluated alcohol consumption and the incidence of mild cognitive impairment in 1,445 people. They then followed 121 people with mild cognitive impairment and their progression to dementia. The participants, age 65 to 84, were part of the Italian Longitudinal Study on Aging and were followed for three-and-a-half years.