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Title: Meta-analyses of the effect of hormone treatment on cognitive function in postmenopausal women
Authors: Yesufu, Amina
Bandelow, Stephan
Hogervorst, Eef
Keywords: Hormone therapy
Cognition
Alzheimer's disease
Estrogen
Postmenopausal
Women
Issue Date: 2006
Abstract: As we age, most of us experience a certain degree of cognitive decline. In most cases, this decline is gradual. However, in some cases, cognitive impairment is so severe it can be classified as dementia and this impacts greatly on activities of daily living. Alzheimer’s disease (AD), the most common form of dementia, has been linked to a reduction in estrogen (E) levels that come with aging. More specifically, many researchers have hypothesized that E, and hence E replacement via Hormone Therapy (HT), could protect against cognitive decline in women. However, recent randomised controlled trials (RCTs) did not reflect this. In fact, some reports showed that HT could be detrimental on cognition in older postmenopausal women. The most publicised of these has been the Women’s Health Initiative Memory Study (WHIMS). However, studies have yielded conflicting results and conclusions. The reasons for this may be due to a number of factors, such as the age of participants, the time of HT onset (‘window of opportunity’ theory), type of treatment, type of menopause (surgical or natural) and, possibly, genetic risk factors. We performed quantitative and qualitative meta-analyses and reviewed each of these factors in detail. The future may lie in combining these factors in order to fully understand the potential mechanisms behind E and its effect on cognition.
Description: This is a pre-print.
URI: https://dspace.lboro.ac.uk/2134/2545
Appears in Collections:Pre-Prints (Sport, Exercise and Health Sciences)

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