Aging

A few months ago, a Chinese team writing in Nature claimed to have found the cause for why organisms age, but a new group refuted a basic assumption of the Nature article. 

A new paper from the International Osteoporosis Foundation (IOF) says that one-third of all hip fractures worldwide occur in men, with mortality rates as high as 37% in the first year following fracture.

This makes men twice as likely as women to die after a hip fracture. Osteoporosis experts warn that as men often remain undiagnosed and untreated, millions are left vulnerable to early death and disability, irrespective of fracture type. 


No one knows you like you know yourself so if you think your memory is slipping, you may be onto something. Self-reported memory complaints are strong predictors of clinical memory impairment later in life. 

 Richard Kryscio, PhD, Chairman of the Department of of Biostatistics and Associate Director of the Alzheimer's Disease Center at the University of Kentucky, and colleagues asked 531 people with an average age of 73 and free of dementia if they had noticed any changes in their memory in the prior year. The participants were also given annual memory and thinking tests for an average of 10 years. After death, participants' brains were examined for evidence of Alzheimer's disease.


Stroke is one of the leading causes of death worldwide and while there are obvious environmental factors such as diet, exercise and behavior, many lines of evidence suggest that the risk of stroke is heritable. Yet until now, only a small number of genes associated with stroke have been identified. 

A new study in the Journal of Clinical Investigation identifies two genes that underlie cerebral small-vessel disease (CSVD), a risk factor for stroke.

Ordan Lehmann and colleagues at the University of Alberta analyzed genome-wide association data from individuals that received brain MRI scans as part of the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) study.


In the developed world, people are having fewer children and living longer and that has led to a population that is older than in the past.

On average, life expectancy in developed countries has risen at a pace of three months per year, and fertility has fallen below replacement rate in the majority of Europe and some other developed countries. Most academic discussion of this trend has so far focused on potential problems - when social security was young there were over 20 workers per retiree and now there are 3 - and that is without the entire Baby Boom being retired and incurring healthcare costs.


Good nose. Credit:  Lowjumpingfrog, CC BY

By Joao Pedro de Magalhaes, University of Liverpool

Biologists have found that increasing the amount of the gene
AMPK
that can slow the aging process throughout the entire body when activated remotely in key organ systems.


Reducing hyperactivity in kids may be as simple as getting them out to play.

Kids are full of energy so having them trapped in a classroom all day from a young age isn't easy. For some, it is bordering on impossible and many of those have been saddled with the  Attention Deficit Hyperactivity Disorder (ADHD) label. Rather than putting kids on expensive - and in the case of Ritalin, dangerous - medications, the solution may be as simple as some play time before school starts.