Small changes in diet can lead to significant health improvements by promoting gradual and sustainable behavioral changes. For example, substituting whole grains for refined grains increases fiber intake, supporting digestive health and maintaining blood sugar levels. Adding more fruits and vegetables enhances vitamin and mineral intake, leading to reduced risk of chronic diseases. These minor alterations can result in weight loss, improved energy levels, and overall better health outcomes over time, making it easier for individuals to stick to their nutrition goals.