Chronic inflammation can significantly impact the body by contributing to various diseases, including heart disease, diabetes, and arthritis. It occurs when the immune system remains activated long-term, resulting in damage to healthy cells and tissues. Symptoms may include chronic pain, fatigue, and gastrointestinal issues. Additionally, inflammation can lead to a cycle of poor health behaviors such as lack of activity and poor diet, further exacerbating health concerns. Addressing chronic inflammation through diet, exercise, and stress management is crucial for long-term health.