Stress causes whole body deterioration. Here is an easy guide on how stress affects multiple sites in the body
Brain: Stress leads to depression, anxiety, anger, irritation, lack of concentration and sleeplessness
Heart: Stress related hormones causes palpitation, high BP, elevated cholesterol and increases your risk for heart attack
Stomach: Over eating and stress related eating leads to irregular bowel movements, cramping and increases abdominal fat deposition.
Pancreas: Stress increases your risk for diabetes as sugar levels are constantly high
Reproductive system: Stress is known to reduce desire for sex and could also lead to irregular menstruation due to hormonal imbalance.