Stress can have numerous negative effects on physical, mental, and emotional health. Physically, stress can lead to headaches, fatigue, chest pain, digestive problems, and even an increased risk of heart attack or stroke. Mentally, it can cause depression, anxiety, and difficulty concentrating. Emotionally, it can lead to feelings of frustration, irritability, anger, and even depression. Additionally, stress can cause difficulty sleeping, reduce libido, and cause substance abuse issues. Long-term stress can even lead to chronic illness, such as hypertension, diabetes, or asthma.