Working Overtime May Be Good for Wealth, But Bad for Your Heart
Until the current work there had been no direct Cardio
Clear 7 Review evidence of a link between chronic stress and heart disease, though many had long suspected such a tie. Chronic high levels of cortisol are known to have negative impacts on our health - increases in blood pressure, blood sugar, body fat, and blood clotting, all risks for heart attack. Heart attacks are a leading killer of men and women in the United States. Each year almost 1.1 million people have a heart attack, almost half die. We are fortunate that medical advances have brought effective treatments that save lives and prevent life-changing disabilities.
Earlier research has measured levels of cortisol in blood, urine, and saliva, but these only give a snapshot of stress at the moment. Cortisol in the hair shaft can provide a long-term assessment of stress levels. Hair is known to grow about 1 centimeter a month, meaning that a 3-centimeter sample is a way to gauge stress over a three-month period.
In the most recent work, hair cortisol levels were a more important predictor of heart attack risk than other known risk factors like high blood pressure, smoking, and high cholesterol. Experts understood that stress was a factor, but no one expected it to be the strongest of all factors. The team compared 3-centimeter hair strands from 56 subjects who were hospitalized after a heart attack to hair strands from men who were in the hospital for other reasons.
The men who had heart attacks had higher levels of cortisol in their hair shafts than those who didn't have heart attacks. These findings held up even after the team controlled for other known risks. The heart attack patients also had higher levels of low-density lipoprotein bad cholesterol levels and higher body mass indexes than those who didn't have a heart attack. These men had lower levels of high-density lipoprotein good cholesterol.
Earlier research has measured levels of cortisol in blood, urine, and saliva, but these only give a snapshot of stress at the moment. Cortisol in the hair shaft can provide a long-term assessment of stress levels. Hair is known to grow about 1 centimeter a month, meaning that a 3-centimeter sample is a way to gauge stress over a three-month period.
In the most recent work, hair cortisol levels were a more important predictor of heart attack risk than other known risk factors like high blood pressure, smoking, and high cholesterol. Experts understood that stress was a factor, but no one expected it to be the strongest of all factors. The team compared 3-centimeter hair strands from 56 subjects who were hospitalized after a heart attack to hair strands from men who were in the hospital for other reasons.
The men who had heart attacks had higher levels of cortisol in their hair shafts than those who didn't have heart attacks. These findings held up even after the team controlled for other known risks. The heart attack patients also had higher levels of low-density lipoprotein bad cholesterol levels and higher body mass indexes than those who didn't have a heart attack. These men had lower levels of high-density lipoprotein good cholesterol.
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