Stress can significantly affect blood sugar levels. When a person experiences stress, their body releases hormones such as cortisol and adrenaline. These hormones can lead to an increase in blood sugar levels by prompting the liver to release stored glucose into the bloodstream. As a result, individuals with existing diabetes may find it more challenging to manage their blood sugar levels during stressful situations. Additionally, stress may affect eating habits, leading some people to overeat or make unhealthy food choices, which can further impact blood sugar control. It's essential to recognize the connection between stress and blood sugar to better manage overall health.