Memory complaints are relatively common during midlife. Depending on how the question is asked, more than half of midlife women will endorse problems with memory, and many will indicate that poor memory carries over to their daily function [1-4]. A major concern of patients and their physicians is that forgetfulness, poor concentration, or simply just fuzzy thinking might portend more serious cognitive impairment in the years to come. Among midlife women, a related question is whether their memory symptoms are caused by hormonal fluctuations or hormonal loss associated with the menopausal transition and postmenopause.
In the July issue of [i]Menopause[/i], Weber and her colleagues  report findings on 75 midlife women. They examined the relation between memory complaints and cognitive performance on a comprehensive battery of neuropsychological tests, and the relation with serum estradiol levels. These women, who were aged 40–60 years, were asked to rate their memory with the 64-item Memory Function Questionnaire (MFQ). Their answers were analyzed according to total score as well as factors related to Frequency of Forgetting, Seriousness of Forgetting, Retrospective Functioning (current memory relative to past memory), and Mnemonics Usage. Self-rated mood was assessed with the Beck Depression Inventory.
About two-thirds of women in this analysis reported at least some degree of memory loss, and a quarter endorsed symptoms of mild to moderate depression. The relation between the two was highly significant ([i]r[/i] = -0.53 for the total MFQ score and the Beck Depression Inventory, [i]p[/i] < 0.001), as was the association between MFQ and a measure of anxiety ([i]r[/i] = -0.33, [i]p[/i] = 0.003). There was no significant relation, however, between the MFQ or MFQ factors and objective measures of memory. For example, the correlation ([i]r[/i]) between total MFQ and delayed recall on a list-learning task was only 0.05 ([i]p[/i] = 0.7).
A very interesting finding emerged when other aspects of cognition were examined. One of the neuropsychological tests, Letter-Number sequencing, required the mental manipulation of letters and numbers read aloud to study participants, who then had to rearrange these in numerical and alphabetical order. This complex attentional task implicates brain processes involved in the temporary maintenance and manipulation of information. The association with the total MFQ was significant ([i]r[/i] = 0.28, [i]p[/i] = 0.015), as were associations with Frequency and Seriousness of Forgetting. Another attentional task, which depended heavily on vigilance, correlated with Frequency of Forgetting, and Weber and colleagues conclude that ‘memory complaints in the menopausal transition may reflect true difficulties with attentionally mediated cognitive processes’ (p. 735). The estradiol level was not significantly correlated with the MFQ or with objective measures of memory or attention. Study limitations include the cross-sectional nature of the analyses and the absence of correction for multiple comparisons.
Victor W. Henderson
Stanford University, Stanford, California, USA
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