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Study Says Sex Hormones Make Men More Prone to Heart Disease
Sex hormones are to be blames as men are more likely to die from heart disease than women of a similar age.
The findings are based on a study by Dr Maciej Tomaszewski, New Blood Lecturer in Cardiovascular Medicine in the Department of Cardiovascular Sciences at the University of Leicester.
It suggests that this 'male disadvantage' may be related to the sex-specific effects of naturally occurring sex hormones.
For the study, Tomaszewski and colleagues involved 933 men aged, on average, 19 years, from the Young Men Cardiovascular Association study.
The researchers looked at ways that the sex hormones - estradiol, estrone, testosterone and androstenedione - interacted with three major risk factors of heart disease (cholesterol, blood pressure and weight).
They found that two of these sex hormones (estradiol and estrone, called together estrogens) are linked to increased levels of bad cholesterol (LDL-cholesterol) and low levels of good cholesterol (HDL-cholesterol) in men.
This suggests that certain sex hormones may be important risk factors of heart disease in men, even before they present symptoms of coronary artery disease or stroke.
"We hypothesised that circulating concentrations of sex hormones were associated with cardiovascular disease risk factors in men long before any apparent manifestations of cardiovascular disease such as stroke or myocardial infarction," Tomaszewski said.
"We examined associations of circulating estrogens (estradiol and estrone) as well as androgens (testosterone and androstenedione) with major cardiovascular risk factors (lipids, blood pressure, body mass) in 933 young (median age - 19 years), apparently healthy men.
The findings are based on a study by Dr Maciej Tomaszewski, New Blood Lecturer in Cardiovascular Medicine in the Department of Cardiovascular Sciences at the University of Leicester.
It suggests that this 'male disadvantage' may be related to the sex-specific effects of naturally occurring sex hormones.
For the study, Tomaszewski and colleagues involved 933 men aged, on average, 19 years, from the Young Men Cardiovascular Association study.
The researchers looked at ways that the sex hormones - estradiol, estrone, testosterone and androstenedione - interacted with three major risk factors of heart disease (cholesterol, blood pressure and weight).
They found that two of these sex hormones (estradiol and estrone, called together estrogens) are linked to increased levels of bad cholesterol (LDL-cholesterol) and low levels of good cholesterol (HDL-cholesterol) in men.
This suggests that certain sex hormones may be important risk factors of heart disease in men, even before they present symptoms of coronary artery disease or stroke.
"We hypothesised that circulating concentrations of sex hormones were associated with cardiovascular disease risk factors in men long before any apparent manifestations of cardiovascular disease such as stroke or myocardial infarction," Tomaszewski said.
"We examined associations of circulating estrogens (estradiol and estrone) as well as androgens (testosterone and androstenedione) with major cardiovascular risk factors (lipids, blood pressure, body mass) in 933 young (median age - 19 years), apparently healthy men.
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