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People are genetically programmed to be attracted to people who are like them, shows a University of Western Ontario study of identical and fraternal twins.
When choosing a spouse or picking friends, individuals tended to zero in on people who were "compatible with their genotypes, such as outgoing people preferring other outgoing people, or traditionalists favoring other traditionalists.
"If you like, become friends with, come to the aid of and mate with those people who are genetically most similar to yourself, you are simply trying to ensure that your own segment of the gene pool will be safely maintained and eventually transmitted to future generations," says the study by J. Philippe Rushton and Trudy Ann Bons, published in the journal Psychological Science.
Rushton noted that environment and timing also impact our choices in relationships.
Just Face It, Antibiotics Carry Risks
Acne sufferers treated with antibiotics face a bigger chance for upper respiratory tract infections, according to a study published in the Archives of Dermatology.
In a large-scale study, those treated with topical or oral antibiotics for more than six weeks were more than twice as likely to suffer upper respiratory tract infections than acne sufferers treated by other means, according to Dr. David Margolis, a professor at the University of Pennsylvania School of Medicine.
Antibiotic overuse has long been a concern of researchers, who note that organisms develop a resistance to antibiotics spurring an increase in infectious diseases. Because antibiotics are a common treatment for acne, the study authors said long-term use of the drugs in that population is a natural. |
