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The study also found that young adults who self-reported feeling depressed or having poor mental health days had higher rates of heart attacks, strokes and risk factors for heart disease compared with their peers without mental health issues.
The study was led by Johns Hopkins Medicine researchers who analysed data from more than a half million people between the ages of 18 and 49, it said.
The findings add to a growing body of evidence connecting CVD with depression among young and middle-aged adults, and suggest the relationship between the two could begin in early adulthood, the study published in the Journal of the American Heart Association said.
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”It’s also common that feeling down could lead to making poor lifestyle choices like smoking, drinking alcohol, sleeping less and not being physically active – all adverse conditions that negativity impact your heart,” said Garima Sharma, associate professor at Johns Hopkins Medicine and senior author of the study.
Sharma and her colleagues looked at data from 593,616 (over 5.9 lakh) adults who participated in the Behavioral Risk Factor Surveillance System, a self-reported, nationally representative survey conducted between 2017 and 2020, the study said.
The survey included questions about whether they have ever been told they have a depressive disorder, how many days they experienced poor mental health in the past month (0 days, 1–13 days or 14–30 days), whether they had experienced a heart attack, stroke or chest pain, and if they had cardiovascular disease risk factors, the study said.
Risk factors, according to the study, included high blood pressure, high cholesterol, being overweight/obese, smoking, diabetes, and poor physical activity and diet. People who had two or more of these risk factors were considered to have suboptimal cardiovascular health, the study said.
One in five adults self-reported having depression or frequently feeling low, with the study noting that there could have been higher rates during the last year of the study, which was the first year of the COVID-19 pandemic, the study said.
The study revealed that, overall, those who self-reported several days of feeling down had a stronger link to cardiovascular disease and poor heart health.
Compared with people who reported no poor mental health days in the past 30 days, participants who reported up to 13 poor mental health days had 1.5 times higher odds of CVD, while those with 14 or more days of poor mental health had double the odds. Associations between poor mental health and CVD did not differ significantly by gender or urban/rural status, the study said.
”The relationship between depression and heart disease is a two-way street. Depression increases your risk of heart issues, and those with heart disease experience depression,” said Yaa Adoma Kwapong, a postdoctoral research fellow at Johns Hopkins Medicine and lead author of the study.
”Our study suggests that we need to prioritize mental health among young adults and perhaps increase screening and monitoring for heart disease in people with mental health conditions and vice versa to improve overall heart health,” said Kwapong.
Kwapong says this new study only provides a snapshot of cardiovascular health among young people with depression, and that new studies need to look at how depression affects cardiovascular health over time.