Lifestyle changes that can reduce the risk of chronic diseases include adopting a balanced diet, engaging in regular physical activity, and maintaining a healthy weight. Consuming a variety of whole foods, such as fruits, vegetables, whole grains, and lean proteins, provides essential nutrients to support bodily functions. Limiting intake of added sugars, saturated fats, and processed foods is also beneficial. Additionally, managing stress through mindfulness practices, prioritizing sleep, and avoiding tobacco and excessive alcohol consumption contributes significantly to lowering disease risk and improving overall health.