Subgroup analysesSubgroup analyses by dose of BHT suggested that higher doses of BHT may be associated with more effectiveness but also higher risk of adverse effects .
There was low to moderate quality evidence that BHT in various forms and doses is more effective than placebo for treating moderate to severe menopausal hot flushes .
There was some evidence to suggest that higher doses of BHT are associated with greater effectiveness but also with higher risk of adverse effects .
No data are yet available about the safety of BHT with regard to long-term outcomes such as heart attack , stroke and breast cancer .
BACKGROUND Various hormone therapies ( HT ) are available to treat  menopausal vasomotor symptoms .
Bioidentical hormones are chemically identical to those produced by the human body , and several types are well-tested and available on prescription .
Many women have opted for bioidentical hormone therapy ( BHT ) on the assumption that it is safer than other forms of HT .
We evaluated the evidence .
OBJECTIVES To determine the effectiveness and safety of bioidentical hormones compared to placebo or non-bioidentical hormones for the relief of vasomotor symptoms .
Vasomotor symptoms and quality of life in previously sedentary postmenopausal women randomised to physical activity or estrogen therapy.
OBJECTIVE To assess if regular physical exercise or oral oestradiol therapy decreased vasomotor symptoms and increased quality of life in previously sedentary postmenopausal women . SETTING A prospect i ve , r and omised trial at a University Hospital . METHODS 75 postmenopausal , sedentary women with vasomotor symptoms were r and omised to : exercise three-times weekly over 12 weeks ( 15 women ) , oral oestradiol therapy for 12 weeks ( 15 women ) and 45 women to three other treatment arms . Results from the exercise and oestradiol groups are presented here . The effects on vasomotor symptoms and wellbeing were assessed with logbooks and vali date d question naires . RESULTS Ten women fulfilled 12 weeks of exercise . The number of flushes was rather unchanged in five women and decreased to 28 % ( range 18 - 42 % ) of baseline in the other five women . Five of the ten women continued to exercise another 24 weeks , thus in all 36 weeks . The mean number of flushes decreased by about 50 % in these five women ( from 6.2/24 to 3.2 flushes/24 h at 36 weeks ) . In the same group a score made as the product of reduction in number and severity of flushes decreased by 92 % at 12 weeks , 75 % at 24 weeks and 72 % at 36 weeks compared with baseline . In the estrogen group flushes decreased from 8.4 to 0.8 ( P<0.001 ) after 12 weeks of therapy and remained at this level after 36 weeks . Well-being according to different measurements improved significantly in both groups , albeit more markedly in the estrogen group . CONCLUSIONS Apart from many other health benefits regular physical exercise may decrease vasomotor symptoms and increase quality of life in postmenopausal women , but this has to be further evaluated scientifically . Exercise should be introduced gradually to ensure compliance
Subgroup analysesSubgroup analyses by dose of BHT suggested that higher doses of BHT may be associated with more effectiveness but also higher risk of adverse effects .
There was low to moderate quality evidence that BHT in various forms and doses is more effective than placebo for treating moderate to severe menopausal hot flushes .
There was some evidence to suggest that higher doses of BHT are associated with greater effectiveness but also with higher risk of adverse effects .
No data are yet available about the safety of BHT with regard to long-term outcomes such as heart attack , stroke and breast cancer .
BACKGROUND Various hormone therapies ( HT ) are available to treat  menopausal vasomotor symptoms .
Bioidentical hormones are chemically identical to those produced by the human body , and several types are well-tested and available on prescription .
Many women have opted for bioidentical hormone therapy ( BHT ) on the assumption that it is safer than other forms of HT .
We evaluated the evidence .
OBJECTIVES To determine the effectiveness and safety of bioidentical hormones compared to placebo or non-bioidentical hormones for the relief of vasomotor symptoms .