A study published in Psychological Science, a journal of the Association for Psychological Science, has linked significant changes in weight with changes in core personality traits. It was found that those who gain weight are more likely to give in to temptations and are more thoughtful about their actions.
The researchers from the Florida State University College of Medicine and the National Institutes of Health (NIH) studied the data from two large-scale longitudinal studies of Baltimore residents, to find understand how fluctuations in body weight might relate to personality changes. NIH's Baltimore Longitudinal Study of Aging (BLSA) and the Baltimore Epidemiologic Catchment Area (ECA) study included the data for 1,900 people in total, belonging to varied age groups and socioeconomic levels.
The data about participants' personality traits and their body weight was retrieved at two time points, separated by nearly a decade. The researchers found that those who had at least a 10 percent increase in body weight showed an increase in impulsiveness, with a greater tendency to give in to temptations. The increase in deliberation could be the result of negative feedback from family or friends that they started thinking twice about food.
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