Lemon juice is one of the best home remedies for fighting obesity. It helps improve digestion and aids in detoxification. Healthy digestion is an essential pre-requisite for weight loss as it helps your body get the nutrients required to burn fat. Furthermore, it helps remove toxins from your body that slow down your metabolism. Mix three teaspoons of lemon juice, one teaspoon of honey, and one-half teaspoon black pepper powder in one glass of water. Drink it in the morning on an empty stomach. Do this daily for at least three months.