OBJECTIVE -The purpose of this study was to assess the role of household conditions for the progression to diabetes in women with impaired glucose tolerance (IGT).
RESEARCH DESIGN AND METHODS-A total of 461 women, aged 50 -64 years, with IGT defined by an oral glucose tolerance test, had baseline advice on physical exercise, diet, smoking, and alcohol habits. Physical examination, blood tests, and questionnaires were completed at baseline and after 2.5 years. Household status was categorized into living alone or with a partner, other adults, or children.RESULTS -Women living alone had a 2.68-fold increased risk (95% CI 1.02-7.05) of developing diabetes after adjustments for biological risk factors. Further stepwise adjustments for education, occupation, subjective mental health, exercise, diet, and alcohol showed remaining significant odds ratios (ORs), decreasing from 3.26 (1.19 -8.96) to 3.03 (1.02-8.99). However, when smoking status was added, the OR became nonsignificant, 2.07 (0.62-6.88). More women who lived alone smoked and did not reduce their daily cigarette consumption compared with women in other household conditions. At follow-up, women living alone had reduced their alcohol consumption and were more often abstainers and fewer had healthy dietary habits or had improved their diet. Physical exercise did not differ among the groups. Separate analyses of any other household status did not show any excess risk for development of diabetes.CONCLUSIONS -Women living alone had a higher risk to progress from IGT to diabetes, mostly explained by smoking, alcohol, and dietary habits. Household conditions should be accounted for when assessing future risk for diabetes.
Diabetes Care 28:2531-2536, 2005B iological risk markers for type 2 diabetes, such as obesity and insulin resistance, are well known (1), and short-term results have described positive effects of changes in lifestyle in subjects with impaired glucose tolerance (IGT) (2,3). To fully understand the causes for the increase in IGT and diabetes (4), a broader perspective that considers social and psychological aspects is needed. Low education and social inequity have been associated with the metabolic syndrome (5,6). Depressive symptoms have been shown to be associated with increased diabetes incidence in women (7), and depression is more pronounced among women who are widows or divorced (8). The rate of divorces has increased during the last 100 years in the western world as well as in Sweden and has doubled the past decade among those Ͼ70 years (9). Individuals living alone after divorce or being widowed or who have never married have an increased mortality risk (9), only partly explained by higher rates of suicide (10). Living conditions according to household status may be a psychosocial stressor in daily life that could have an impact on health and outcome of diseases, such as diabetes. We have previously described a subgroup of welleducated single women with a more favorable lifestyle (11), whereas women living alone in general had impairments in...