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

Group Wants Legislators' Pledge To Read Entire Health Care Bill
A conservative group wants every lawmaker to pledge to read the entire bill for comprehensive health reform before voting.
generic viagra
Oregon Hospital Building Boom Slows Down
"Oregon"s hospital spending boom is winding to a close," as hospitals cut back on projects, Portland Business Journal reports. "Portland-area hospitals have opened, started construction on, or announced expansions costing at least $1.3 billion in the past 18 months. Projects include cancer treatment centers, cardiac units and pediatric care facilities. Now, spurred by economic concerns, health organizations are cutting back. ... It doesn"t make financial sense to embark on major new projects until the economy improves and hospital administrators know how health care reforms may affect their operations, said Providence Chief Operating Officer Terry Smith."
News of the day
Patient Recall Rates May Be Decreased By Digital Mammography Plus Digital Breast Tomosynthesis
Nationally, about ten percent of women in the US are recalled for a second mammogram after an abnormality is detected on the first one - for most women this can be very stressful. However the use of digital breast tomosynthesis and full-field digital mammography combined may be associated with a substantial decrease in recall rate, according to a study performed at UPMC in Pittsburgh, PA. Some researchers believe that digital breast tomosynthesis depicts the breast tissue in a way which may allow radiologists to identify some tumors which could be missed with standard two-dimensional mammography.
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