Many studies have found a significantly lower frequency of reported hot flushes in Japanese and Japanese American women, leading to speculation about dietary, genetic or cultural differences with Western women.
In a study comparing reported hot flush frequency with objective measurement, researchers found that while Japanese Americans were less likely to report hot flushes and other symptoms, they did not have significantly fewer hot flushes as measured by skin conductance monitoring compared with European American women.
The common finding of fewer hot flushes in Japanese women may be a consequence of reporting bias, probably due to cultural factors, the researchers concluded.
Do Japanese American women really have fewer hot flashes than European Americans? The Hilo Women's Health Study.
Brown, DE et al
Menopause 2009; online 8 April
Content updated April 24 2009