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Scientists have found that sperm from diabetic men have greater levels of DNA damage than sperm from men who do not have the disease. They warn that such DNA damage might affect a man’s fertility.

There is renewed hope for treatment of a rare genetic condition, Progeria, that causes rapidly accelerated aging and leads to an average life expectancy of 13 years.

Scientists studying the genes of two infants who died of mysterious illnesses found the infants had mutations in LMNA, the same gene altered in patients with the premature aging condition. But the infants' unusual mutations caused them to make many more bad copies of the gene's primary protein, lamin A, than progeria patients.

Tens of thousands of Americans die each year from secondhand tobacco smoke, according to a 2006 report by the U.S. Surgeon General. While the health risks associated with indoor secondhand smoke are well documented, little research has been done on exposure to toxic tobacco fumes outdoors.

In studies going back to the 1930’s, mice and many other species subsisting on a severely calorie-restricted diet have consistently outlived their well-fed peers by as much as 40 percent. But just how a diet verging on the brink of starvation extends lifespan has remained elusive.

Now, researchers at the Salk Institute for Biological Studies have cracked open the black box of how persistent hunger promotes long life and identified a critical gene that specifically links calorie restriction (CR) to longevity.

When it comes to studying energy transfer in photosynthesis, it's good to think "outside the bun."

That's what Robert Blankenship, Ph.D., professor of biology and chemistry in Arts & Sciences at Washington University in St. Louis, did when he contributed a protein to a study performed by his collaborators at Lawrence Berkeley National Laboratory and the University of California at Berkeley. The protein's moniker? The taco shell protein.

Taco shell protein

Breastfeeding and the good fats in Omega-3 fatty acids help new moms fight depression, according to new review.

By monitoring changes in vibrations of bridges it is possible to identify hidden cracks and fractures, according to a Queensland University of Technology researcher.

QUT engineering researcher Henry Shih said variations in bridge vibrations of a bridge could be a telling sign of its structural "health".

"It's not always possible to see damage to a bridge, but using vibrations it is possible to 'see' what can't be seen," he said.

Fairness of kidney allocation is essential for public trust.

While the field of transplantation is quite young, substantial advancements and success have led to the current imbalance between the supply of organs and the demand for them. The United Network for Organ Sharing (UNOS) coordinates the nation's transplant system through a point system based primarily on wait time, sensitization and HLA matching.

Eating low-calorie soup before a meal can help cut back on how much food and calories you eat at the meal, a new Penn State study shows. Results show that when participants in the study ate a first course of soup before a lunch entree, they reduced their total calorie intake at lunch (soup + entrée) by 20 percent, compared to when they did not eat soup.

Physical alterations of DNA in chromosomes can cause serious diseases such as Down syndrome, Prader-Willi syndrome, or cancer. Likewise, changes to the physiological environment of cells—with drugs or toxins, for example—can alter their metabolic output. To track these processes, scientists need ways to mark genes and their protein products.

Increasing the testosterone levels of female cancer survivors using testosterone cream did not improve their libido more than a placebo, according to a randomized controlled clinical trial in the May 2 Journal of the National Cancer Institute.

Female cancer patients often experience decreased sexual desire, and previous studies have shown an association between testosterone therapy, also called androgen therapy, and increased libido in women with adequate estrogen levels.

Urbanization changes landscapes and local environments, which can alter the life histories and traits of the creatures living in and around these areas. Studying European blackbirds (Turdus merula), Jesko Partecke and Eberhard Gwinner (Max Planck Institute for Ornithology) discovered certain adaptive traits, that in the long run, could lead to more offspring. The study, "Increased sedentariness in European Blackbirds following urbanization: a consequence of local adaptation?," appears in the April issue of Ecology.

Researchers have found a chemotherapy treatment that targets specific cells, reducing discomfort.

A new class of compounds developed by two University of Kentucky researchers shows promise as a nontoxic treatment of some cancers previously treated with toxic chemotherapy, the researchers report today.

The first clinical trial to test a revolutionary treatment for blindness in children has been announced by researchers at UCL (University College London). The trial, funded by the Department of Health, is the first of its kind and could have a significant impact on future treatments for eye disease.

Even though they had the ability to evolve and survive for hundreds of millions of years - since before the time of the dinosaurs and through many climatic regimes - the massive, worldwide decline of amphibians can best be understood by their inability to keep pace with the current rate of global change, a new study suggests.