A new study has said that the right method of Hormone Replacement Therapy (HRT) taken at the right age can determine a woman's risk of having a heart-attack.
In the Danish study on the association between hormone replacement therapy (HRT) and heart attacks, scientists have found that it's not what women take but the way they take it that produces different results in women who take hormone replacement therapy.
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The study is the largest to look at the effects of HRT since the Women's Health Initiative trial was stopped early after finding that HRT increased the risk of women developing a range of conditions including breast cancer and thromboembolism.
It is an observational study of 698,098 healthy Danish women, aged 51-69, who were followed between 1995-2001.
It was found that overall there was no increased risk of heart attacks in current users of HRT compared to women who had never taken it.
![Heart Attack]( "Heart Attack")
Heart attack is the death of the heart muscle due to loss of blood supply. Heart disease is the leading cause of death in the United States. Other names for heart attack include acute myocardial infarction, coronary thrombosis, and coronary occlusion.
But what it found was that in younger women (aged 51-54) who were taking HRT during the period of the study, the risk of heart attacks was about a quarter (24percent) more than in women who had never taken HRT. Also, in younger women there was an increasing risk with longer duration of HRT, which was not seen in the older age groups.
The study indicated that continuous HRT (a continuous combination of oestrogen and progesterone) carried a 35 percent increased risk of heart attacks as compared to women who had never used HRT.
But when HRT was taken on a cyclical basis (oestrogen, followed by a combination of oestrogen and progesterone) the women tended to have a reduced risk of heart attacks compared to women who had never used HRT, and the result was same if a synthetic hormone, tibolone, was used.
If the method of taking the oestrogen was via a patch or gel on the skin or in the vagina, the risk of heart attack reduced by more than a third (38 percent and 44 percent respectively).
"Our finding of lower risk with a cyclic combined regimen, which gives monthly bleeding, than with continuous combined oestrogen/progesterone therapy, which does not cause bleeding, is potentially of great clinical importance. Also, the decreased risk of myocardial infarction with vaginal treatment is a very interesting finding that has not been tested before in large scale observational studies," said Dr Ellen Lokkegaard, a gynaecologist at the Rigshospitalet in Copenhagen, Denmark, who led the study.
In her opinion, the study produced similar results to the WHI study (a randomised controlled trial) for comparable HRT treatments, and that this suggested that the results from her study for the other, non-comparable treatments were valid.
Since the WHI trial was stopped, no further randomised controlled trials of HRT have been started.
"This study is the first, big observational study that addresses the influence of various regimens, doses and routes of administration. In this 'post randomised era' where randomised studies on HRT are not easily performed, it provides important new information," said Dr Lokkegaard.
The study was published online in Europe's leading cardiology journal, the European Heart Journal.
Source: ANI
RAS/M
It was found that overall there was no increased risk of heart attacks in current users of HRT compared to women who had never taken it.
Heart Attack
Heart attack is the death of the heart muscle due to loss of blood supply. Heart disease is the leading cause of death in the United States. Other names for heart attack include acute myocardial infarction, coronary thrombosis, and coronary occlusion.
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But what it found was that in younger women (aged 51-54) who were taking HRT during the period of the study, the risk of heart attacks was about a quarter (24percent) more than in women who had never taken HRT. Also, in younger women there was an increasing risk with longer duration of HRT, which was not seen in the older age groups.
The study indicated that continuous HRT (a continuous combination of oestrogen and progesterone) carried a 35 percent increased risk of heart attacks as compared to women who had never used HRT.
But when HRT was taken on a cyclical basis (oestrogen, followed by a combination of oestrogen and progesterone) the women tended to have a reduced risk of heart attacks compared to women who had never used HRT, and the result was same if a synthetic hormone, tibolone, was used.
If the method of taking the oestrogen was via a patch or gel on the skin or in the vagina, the risk of heart attack reduced by more than a third (38 percent and 44 percent respectively).
"Our finding of lower risk with a cyclic combined regimen, which gives monthly bleeding, than with continuous combined oestrogen/progesterone therapy, which does not cause bleeding, is potentially of great clinical importance. Also, the decreased risk of myocardial infarction with vaginal treatment is a very interesting finding that has not been tested before in large scale observational studies," said Dr Ellen Lokkegaard, a gynaecologist at the Rigshospitalet in Copenhagen, Denmark, who led the study.
In her opinion, the study produced similar results to the WHI study (a randomised controlled trial) for comparable HRT treatments, and that this suggested that the results from her study for the other, non-comparable treatments were valid.
Since the WHI trial was stopped, no further randomised controlled trials of HRT have been started.
"This study is the first, big observational study that addresses the influence of various regimens, doses and routes of administration. In this 'post randomised era' where randomised studies on HRT are not easily performed, it provides important new information," said Dr Lokkegaard.
The study was published online in Europe's leading cardiology journal, the European Heart Journal.
Source: ANI
RAS/M
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