High levels of cortisol, the stress hormone, can pose several health risks, including weight gain, hypertension, and a weakened immune system. Chronic elevation of cortisol due to prolonged stress can disrupt metabolic function, leading to increased appetite and fat accumulation, particularly around the abdomen. High cortisol levels are also linked to cardiovascular diseases and mental health conditions such as anxiety and depression. Additionally, they can impair the body's ability to fight infections, emphasizing the importance of stress management for maintaining overall health and wellness.