Categories
Cardiovascular
Diagnostics
Endocrinology
Health Insurance
Medical Devices
Mental Health
Nutrition
Oncology
Public Health
Sexual Health
Popular Articles

Heatwave Plan Updated With Advice For Those With Respiratory Problems, UK
New advice to help people with respiratory problems cope in a heatwave is published by the Department of Health.

Solomon Islands Could See Increase In HIV Cases, World Health Organization Says
A recent estimate from the World Health Organization says that the number of HIV cases in the Solomon Islands could reach at least 350 by 2010, the Solomon Star News reports. The Star News reports that 12 new HIV cases were confirmed in 2008, although the actual number of new cases could be higher because of unreported cases. Of the 12 cases reported in 2008, eight were among women and four were among men, according to a health report.In addition, sexually transmitted infections, particularly syphilis and chlamydia, are prevalent among pregnant women in the country and overall condom use is low, indicating that people could be at a high risk for HIV, according to the report. The most at-risk populations include mobile workers, commercial sex workers, students and men who have sex with men. Twelve facilities in the country currently offer HIV tests, and a relatively low number of tests are conducted, according to the Star News. The Ministry of Health has partnered with various groups and agencies to address HIV/AIDS in the country, the Star News reports (Carter, Solomon Star News, 5/26).
News of the day
Canada Joins International Effort To Provide Access To Health Research
Accelerating the development of discoveries and innovations and facilitating their adoption through free and open access to research findings. This is the aim of an important new initiative that will provide researchers and knowledge users free access to a vast digital archive of published health research at their desktop and connect them to an emerging international network of digital archives anchored in the United States.
Medical Devices

Good Males Are Bad Fathers

Contrary to predictions, males of high genetic quality are not very successful when it comes to fertilizing eggs. A new study on seed beetles by Swedish and Danish scientists Goran Arnqvist and Trine Bilde shows that when a female mates with several males, the males of low genetic quality are the most successful in fertilizing eggs. The study is published in this week"s issue of Science. In almost all animals, females mate with several different males, despite the fact that a single mating is often sufficient to fertilize her eggs. Multiple mating also carries costs to females, such as the risk of catching sexually transmitted diseases. One commonly held belief is that this behaviour may allow females to choose the sperm of the male with highest genetic quality to fertilize her eggs. Professor Gç¶ran Arnqvist from the Department of Ecology and Evolution, Uppsala University and associate professor Trine Bilde from the Department of Biological Sciences, University of Aarhus, have tested this possibility directly for the first time and shown that it is not true. Their study on seed beetles shows that, contrary to predictions, males of low genetic quality are more successful in fertilizing eggs. Males who gained the highest share of paternity were actually males with low genetic quality. These males also fathered offspring that did less well. "The results support the suggestion that genes that are good for males may often be bad for their mates. Therefore, in beetles at least, multiple mating does not award females with genetic benefits," says Gç¶ran Arnqvist. Goran Arnqvist Uppsala University


Add your comment:
Name:
Site address: http://
Your message:
Enter today\\\\'s date, 2 digits
(spam protection):

© Copyright 2009