What is the quickest method to lose weight?

The quickest safe method is combining a calorie deficit with regular exercise. Eat 500-750 fewer calories than you burn daily, focus on whole foods like vegetables, lean proteins, and whole grains, and do 30-60 minutes of cardio most days. Drink plenty of water and get 7-8 hours of sleep. Quick fixes or extreme diets are not sustainable and can harm your health.