Frequency News and Research

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Frequent sex improves sperm quality

Daily sex (or ejaculating daily) for seven days improves men's sperm quality by reducing the amount of DNA damage, according to an Australian study presented today (Tuesday) to the 25th annual meeting of the European Society of Human Reproduction and Embryology in Amsterdam.

30 Jun 2009

Vibrator use during sex is common, linked to sexual health

Two Indiana University studies conducted among nationally representative samples of adult American men and women show that vibrator use during sexual interactions is common, with use being reported by approximately 53 percent of women and 45 percent of men ages 18 to 60. Not only is vibrator use common, but the two studies also show that vibrator use is associated with more positive sexual function and being more proactive in caring for one's sexual health.

30 Jun 2009

Discovery of second gene linked to familial testicular cancer

Specific variations or mutations in a particular can gene raise a man's risk of familial, or inherited, testicular germ-cell cancer, the most common form of this disease, according to new research by scientists at the National Institutes of Health.

29 Jun 2009

New, less invasive genetic test greatly improves pregnancy rates in older women with poor prognosis

A new test examining chromosomes in human eggs a few hours after fertilisation can identify those that are capable of forming a healthy baby, a researcher told the 25th annual conference of the European Society of Human Reproduction and Embryology today (Monday 29 June).

29 Jun 2009

Electrothermally driven micropumps for medicine

In biomedicine and biotechnology the smallest, complex, compound sample quantities must be reliably processed. Microsystems with new mechanisms of action for pumping, filtering and separating will manage this task with great efficiency in the future.

25 Jun 2009

Smoking provokes migraine attacks

Tobacco acts as a precipitating factor for headaches, specifically migraines. This is indicated in a study which shows that smokers have more migraine attacks and that smoking more than five cigarettes a day triggers this headache. The work has appeared in The Journal of Headache and Pain.

24 Jun 2009

Scientists unearth the roots of human genetic variation

A new study at the University of Leicester is using advanced single molecule methods to explore processes that lie at the very core of DNA variation in humans.

23 Jun 2009

Migraines with aura in middle age associated with late-life brain lesions

Women who suffer from migraine headaches in middle age accompanied by neurological aura (visual disturbances, dizziness or numbness that can precede migraines) are more likely to have damage to brain tissue in the cerebellum later in life, according to a study by researchers at the National Institute on Aging (NIA) of the National Institutes of Health, the Uniformed Services University of the Health Sciences and the Icelandic Heart Association in Reykjavik.

23 Jun 2009

Rhinosinusitis may be a factor in toxic shock syndrome in children

Rhinosinusitis (infection and inflammation in the sinus passages surrounding the nose) appears to be a primary factor in about one-fifth of toxic shock syndrome cases in children, according to a report in the June issue of Archives of Otolaryngology-Head & Neck Surgery.

15 Jun 2009

FDA releases fraudulent H1N1 flu virus product list

The U.S. Food and Drug Administration is enforcing the laws that protect consumers from illegal products marketed through the Internet that claim to diagnose, prevent, mitigate, treat or cure the 2009 H1N1 flu virus.

15 Jun 2009

Certain pesticides double the risk of blood disorder

A study involving 678 individuals who apply pesticides, culled from a U.S. Agricultural Health Study of over 50,000 farmers, recently found that exposure to certain pesticides doubles one's risk of developing an abnormal blood condition called MGUS (monoclonal gammopathy of undetermined significance) compared with individuals in the general population.

13 Jun 2009

Bisphenol A may cause heart disease in women

New research by a team of scientists at the University of Cincinnati (UC) shows that bisphenol A (BPA) may be harmful for the heart, particularly in women.

10 Jun 2009

Researchers estimate risk of transmission of Huntington's disease to offspring among male carriers

Researchers from Boston University School of Medicine (BUSM) have quantified the probability of a male who carries a "high normal" variant of the Huntington's Disease (HD) gene having a child who develops the disease. Although thought to be a very rare event, the probability has never been estimated using current information and disease guidelines. The findings, appear on-line in the American Journal of Medical Genetics, may be useful during prenatal genetic counseling.

9 Jun 2009

Botox injections can help overactive bladders sufferers

Botox is well known for its cosmetic uses, but researchers have now found that it can also significantly improve people's quality of life if they suffer from another problem that increases with age, an overactive bladder (OAB).

9 Jun 2009

Genetic and environmental relations between insomnia and intrusive thinking

The genetic factors that cause increased sleep problems during times of stress seem to be the same as those that make people with intrusive and ruminative thoughts have a higher prevalence of insomnia, according to a research abstract that will be presented on Tuesday, June 9, at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies.

9 Jun 2009

Obstructive sleep apnea increases likelihood of parasomnia symptoms

Patients suffering from obstructive sleep apnea (OSA) have an increased prevalence of parasomnia symptoms compared with the prevalence rates of individual parasomnias, according to a research abstract that will be presented on Tuesday, June 9, at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies.

9 Jun 2009

New research looks at the role of geography in human adaptation

New research indicates that natural selection may shape the human genome much more slowly than previously thought. Other factors -- the movements of humans within and among continents, the expansions and contractions of populations, and the vagaries of genetic chance - have heavily influenced the distribution of genetic variations in populations around the world.

5 Jun 2009