A new study shows that there are pro-social behaviors in rats. The experiment had two same-sex rats housed in the same cage for two weeks. This will give them a chance to have a “relationship.” During the test sessions, one rat was able to run free while the other was trapped in a plastic restraining tube. The tube was created so that the free rat is able to free the trapped one if it could figure out how to tip over the door. The result showed that most of the time the free rat tries to help the trapped companion out of the tube. The trap can only be freed if the rat figures out that they can pitch their nose up to the point where they could open the door. There were no lessons prior to teach the rats how to nudge the door open or give them any incentive to. They had to learn it on their own. The research also suggests that females are more empathetic than males since all the female rats learned to open the door while only 17/24 of the males did.
They also experimented with food by having two restraining tubes, one with the trapped rat and the other with chocolate chips. It turns out that half of the time, the rats chose to free their friend and then share the chocolate among each other.
To read more of the study, click here—courtesy of Times Heathland
A new study found that women who drank two to three cups of caffeinated coffee a day decreased their chance of developing depression by 15% according to a 10 year study period. This was compared to women who consumed one cup or less per day. The study also showed that the more cups you drank, the lower the risk; “women who drank four or more cups had 20% lower risk.”
The study was conducted by Dr. Alberto Ascherio, a professor of epidemiology and nutrition at Harvard School of Public Health. The reason for this lower risk is due to caffeine boosting alertness and energy. He suggests that the dependency of caffeinated coffee may have long term effects on the brain. There is no a direct link between depression and drinking coffee, but there is an association which has not been clearly found. They do know that “caffeine works by binding to receptors for brain chemicals associated with mood.”
Overall, there is no guarantee that drinking coffee will have a positive effect in the long run as everyone reacts differently to caffeine.
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Click here for the original article – Courtesy of Times HealthLand
Growing up, people would hear that crying makes you feel better so they should let out a good cry. Now, new research published in the Journal of Research in Personality found that crying has no effect on the moods of almost two-thirds of the women who were told to keep a daily emotion journal. They found that only a few of people had mood improvement after their crying episodes.
The study had 97 Dutch women, ages 18-48, logged 1,004 crying episodes as part of their mood journals that they kept over three month period. A crying session lasted on average of 8 minutes. The main reasons for them crying were outcomes of conflict, loss, or empathy over another’s suffering. The results showed that 61% of the women did not feel better while 9% said that they felt sadder after crying. Only 30% wrote that they felt better after crying. This suggests that most people feel better by social support or showings of affection by others.
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Read original article here from Times Health Land
It has always been known for years that men die of cancer more often than women, but this is the first that a new study was able to analyze individual cancers and study the sex differences. The journal Cancer Epidemiology, Biomarkers, and Prevention used data from 1977 to 2006 by cancer registries across the U.S and found out 33 out of the 36 cancer types that were reviewed, men died more than women. The three cancer types that women died more of are peritoneum, omentum, and mesentery cancer, gall bladder cancer, and cancer of the anus, anal canal, and anorectuum. All three cancer types are exceptionally rare.
The study does not explain the causes of men’s higher cancer incidence, because it is not clear. These are the top five biggest disparities cancer deaths rates found in the study (they are all rare as well):
- Cancer of the lip: 5.51 men died for every one woman
- Cancer of the larynx: 5.37 med died for every one woman
- Cancer of the hypopharynx: 4.47 men died for every one woman
- Cancer of the esophagus: 4.08 men died fore very one woman
- Cancer of the bladder: 3.36 men died for every woman
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