News tagged with sex
Since 1977, there has been a 70% increase in caffeine consumption among children and adolescents. Whether it is coffee, tea, soda, or energy drinks, our children are consuming more of it. One well documented effect of caffeine ...
Health Apr 22, 2013 | 3.5 / 5 (2) | 0
Men experience a higher burden of disease and lower life expectancy than women, but policies focusing on the health needs of men are notably absent from the strategies of global health organisations, according to a Viewpoint ...
Health May 16, 2013 | not rated yet | 0
In Kenya, women face a cervical cancer mortality rate that is approximately 10 times as high as in the United States. A study by researchers at the University of North Carolina at Chapel Hill suggests that training women ...
Cancer May 01, 2013 | not rated yet | 0
Female rats are much more likely to binge eat than male rats, according to new research that provides some of the strongest evidence yet that biology plays a role in eating disorders.
Diseases, Conditions, Syndromes May 01, 2013 | 5 / 5 (1) | 0
(HealthDay)—Danish scientists testing a novel HIV treatment in human trials contend that they're confident their strategy will result in a cure for the AIDS-causing virus, according to news reports.
HIV & AIDS Apr 29, 2013 | 5 / 5 (1) | 0
New research suggests that changes in sex hormones as seen in obesity may have possible effects on the heart. The study by researchers from Belgium, presented at the European Congress of Endocrinology in Copenhagen, Denmark, ...
Overweight and Obesity Apr 29, 2013 | not rated yet | 0
Testosterone may trigger a brain chemical process linked to schizophrenia but the same sex hormone can also improve cognitive thinking skills in men with the disorder, two new studies show.
Neuroscience Apr 26, 2013 | not rated yet | 0
Researchers at the University of Cincinnati (UC) have found that the race and sex of study personnel can influence a patient's decision on whether or not to participate in clinical research.
Health May 17, 2013 | not rated yet | 0
The Obama administration and federal courts are wrangling over changes to the regulations governing access to emergency contraceptives. The administration supports new rules that would allow girls as young ...
Medications May 14, 2013 | not rated yet | 0
What is the reason for the widely reported fact that men are more likely than women to die of cancer? New evidence from population studies suggests that free testosterone could be a key driver of cancer aggressiveness in ...
Cancer May 14, 2013 | 5 / 5 (1) | 0
Cambodia is on track to become one of the few countries in the world to successfully reverse its HIV epidemic and may eliminate new infections by 2020, the World Health Organization said Friday.
HIV & AIDS May 10, 2013 | not rated yet | 0
(AP)—The U.S. Supreme Court wrestled Monday with the constitutional implications of a policy that forces private health organizations to denounce prostitution as a condition to get AIDS funding.
HIV & AIDS Apr 22, 2013 | 5 / 5 (1) | 0
In biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into male and female types (or sexes). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism.
An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.
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