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The study found that women living in neighborhoods with little green space became menopausal 1.4 years earlier than those in living in the greenest areas. On average, age at menopause was 51.7 years for women living in the greenest areas, compared with 50.3 years for women living in areas with little green space.
In addition to genetic factors, age at menopause is influenced by lifestyle factors such as smoking, obesity, physical activity and the use of oral contraceptives. A number of biological processes could explain the association between green space and older age at menopause.
We know that stress increases the level of cortisol in the blood, and numerous studies have shown that exposure to green spaces reduces it. Low cortisol levels have been associated with increased levels of estradiol, an important female sex hormone. Perhaps women who live near green space have lower cortisol levels, which would allow them to maintain higher levels of estradiol, which may in turn delay the onset of menopause. Exposure to green space is also associated with a lower risk of certain mental health conditions, such as depression, which is also associated with younger age at menopause." Kai Triebner, postdoctoral visiting researcher at ISGlobal and lead author of the study Menopause: An indicator of health
"Menopause is a marker of health and can be associated with undesirable alterations in body physiology and mental health," commented Payam Dadvand, researcher at ISGlobal and coordinator of the study. In fact, later age at natural menopause has been positively associated with overall survival, life expectancy and reduced mortality. "If confirmed, our findings will add to the body of evidence on the health benefits of green space and help policymakers to implement interventions aimed at decelerating reproductive aging in our rapidly urbanizing world." Source:
Barcelona Institute for Global Health (ISGlobal) Journal reference:
Triebner, K., et al. (2020) Residential surrounding greenspace and age at menopause: A 20-year European study (ECRHS). Environment International . doi.org/10.1016/j.envint.2019.105088 .
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