Diet & Nutrition
Mental & Emotional Health
Chronic Stress Makes Junk Food Even Worse for You
File this under “That’s not fair!” People who are not dealing with chronic stress can get away with eating a lot of high-fat, high-sugar food without upping their risk of metabolic syndrome, but stressed out people can’t. That’s the finding of research done at the University of Califorina, San Francisco. The study, which was published online in the journal Psychoneuroendocrinology in April 2014, is the first to demonstrate that highly stressed people who eat junk food are more prone to health risks than low-stress people who eat the same amount of unhealthy food.
A release from the university quotes lead author Kirstin Aschbacher PhD, an assistant professor in the UCSF Department of Psychiatry, as saying, “Chronic stress can play an important role in influencing biology, and it’s critical to understand the exact pathways through which it works. Many people think a calorie is a calorie, but this study suggests that two women who eat the same thing could have different metabolic responses based on their level of stress. There appears to be a stress pathway that works through diet – for example, it could be similar to what we see in animals, where fat cells grow faster in response to junk food when the body is chronically stressed.”
The release explains that metabolic syndrome is a cluster of abnormalities— increased blood pressure, a high blood sugar level, excess body fat around the waist and abnormal cholesterol levels — that occur together, increasing a person’s risk of heart disease, stroke, and diabetes.
While this stress-junk food pathway has been well mapped out with rodents and primates, this study is the first to suggest the same pathways may be at work in chronically stressed humans, according to the researchers.
“We can see this relationship exists by simply measuring stress and dietary intake, and looking inside at metabolic health,” said senior author Elissa Epel. “Diet appears to be a critical variable that can either amplify or protect against the metabolic effects of stress, but we still don’t know the details of how much it takes. It will be helpful to see what happens in our next study, when we have high stress people eat a high sugar diet for a couple weeks.”
The researchers looked at a group of 61 disease-free women; 33 were chronically stressed women caring for a spouse or parent with dementia, and 28 were women with low stress. Over the course of a year, the women reported their consumption of high sugar, high fat foods.