London - Could having a partner who smokes make you depressed?
A survey of more than 1 000 non-smoking, middle-aged women suggested that those who were exposed to second-hand smoke had more than double the risk of having depression than those who were not, reports the journal Psychiatry Research.
Researchers at Guangdong Pharmaceutical University, China, also found that the more regular the exposure to secondhand smoke, the worse the women’s symptoms were.
One theory is that nicotine in the exhaled smoke changes the balance of various brain chemicals, including serotonin and norepinephrine, which control mood.
Smokers have previously been shown to be more likely to be depressed, too.
Daily Mail