stress

This shows slides from the study

How stressed-out gut bacteria may trigger autoimmune response

Chronic social stress in mice induces the expression of virulent genes in the gut microbiota. The altered microbiota increases the presence of effector T helper cells in the lymph nodes and induces myelin autoreactive cells. Exposure to chronic stress, therefore, may increase the risk of developing autoimmune diseases for some individuals with a susceptibility.... Read More...
This shows neurons in the central amygdala

Comfort food leads to more weight gain during stress

A combination of chronic stress and high-calorie diets raised insulin levels tenfold in the amygdala of mice. Prolonged high levels of insulin in the central amygdala resulted in neurons becoming desensitized to insulin. The desensitized neurons boosted NPY levels, which promoted eating and reduced the normal homeostasis response to burn calories. The findings may shed light on why some indulge in high-calorie foods when stressed, and why this may lead to obesity.... Read More...