Being overweight or obese can lead to several health issues: 1) It increases the risk of coronary heart disease, high blood pressure, and stroke due to the strain on the cardiovascular system and buildup of plaque in arteries. 2) Excess weight can cause or worsen sleep apnea by narrowing the airway. 3) Obesity is a leading risk factor for type 2 diabetes since excess weight interferes with how the body uses insulin. Maintaining a healthy weight through diet and exercise is important for reducing these health risks.