Brightsurf Science News & Current Events

November 23, 2000
Transmission of HIV remains high among homosexual and bisexual men
The level of undiagnosed HIV-1 infection among homosexual and bisexual men did not fall between 1993 and 1998, indicating a high level of continuing transmission, finds a study in this week's BMJ.

Science's Nanotechnology Issue: 'Dancing' tin may promise new nanomotors
Tin crystals promenade across copper, stopping now and then to trade places with a counterpart, using choreography akin to the

Household exposure to passive smoke depletes some vitamins in non-smokers
Passive smoking is considered causally associated with lung cancer and ischemic heart disease.

Zinc supplementation reduces duration of diarrheal episodes in infants in developing countries
Diarrheal disease accounts for approximately one-fourth of all deaths yearly among children in developing countries aged 0-4 years and contributes substantially to malnutrition in surviving children.

Cataract incidence in men increases with height, waist size and body mass index
In a large study of physicians,Schaumberg et al.found that men with the highest waist-to-hip ratios (WHR) were 1.55 times more likely to develop cataract than those with the lowest WHR, and the tallest men were 1.23 times more likely to develop cataract than shorter men.

High cholesterol is undertreated in England
At least a quarter of English adults have cholesterol levels above the ideal, yet only one in 50 take cholesterol lowering drugs, finds a study in this week's BMJ.

Age and race are significant risk factors for vitamin D deficiency and disability among elderly women
Vitamin D deficiency is associated with bone loss and bone fractures, which are major causes of disability and death among elderly women.

Being underweight or overweight reduces fertility in women
Extremes of weight are associated with reduced probability of achieving pregnancy in women receiving assisted reproduction treatment, finds a study in this week's BMJ.

Simpler HIV drug regimen may improve results, Science study on monkeys suggests
Regular holidays from HIV drugs may help the immune system control the virus on its own, at least in monkeys.

Just as you suspected: research shows a lot of things that taste bad are good for you
Brussels sprouts, grapefruit, cabbage, kale and mustard greens are among the foods that contain nutrients associated with cancer prevention and other health benefits.

Babies, Pacman and the doors of perception examined in Science
For most of us, seeing the world around us is an effortless process, which involves grouping together different features of an object to form the whole: nib, barrel and lid form a pen, for example. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to