Whether you want to lose weight for a special occasion or simply improve your health, weight loss is a common goal. To set realistic expectations, you may want to know what a healthy weight loss rate is. Losing weight too quickly can lead to problems like gallstones, muscle loss, and extreme fatigue. Experts recommend a moderate weight loss of 1–3 pounds (0.45–1.36 kg) per week, or about 1% of your body weight.