Study says smoking may increase stress sensitivity

“The researchers also found that a mouse exposed to a single aggression shows signs of stress only been exposed to nicotine,” the study said.

Smoking can increase stress sensitivity, according to a study in mice by the National Center for Scientific Research of France (CNRS) and published on Tuesday in the journal ” Molecular Psychiatry .”

Image result for Study says smoking may increase stress sensitivity

Contrary to popular belief that smoking has a relaxing effect and that a lack of nicotine produces stress, exposure to this addictive molecule may produce the opposite effect, the researchers said in a statement.

The scientists evaluated the levels of social stress in rodents, a situation that occurs when “one of these animals is subjected to repeated aggression from the dominant ones.” In this circumstance, some mice blocked the nicotine receptors, while others activated.

From the evaluation of behavior and electrophysiological parameters of the brain, the CNRS experts established that no signs of social stress appear when the receptors are blocked and on the contrary, they were amplified.

Related image

“The researchers also found that a mouse exposed to a single aggression shows signs of stress only been exposed to nicotine,” the study said.

Although the work focuses on how nicotinic receptors affect the control of stress in mice, the CNRS has announced that scientists will examine whether this situation can be amplified for all mood disorders and whether the results are applicable to humans.