Lemons are high in vitamin C, fiber, and various beneficial plant compounds. These nutrients are responsible for several health benefits. In fact, lemons may support heart health, weight control, and digestive health. Lemons are high in heart-healthy vitamin C and several beneficial plant compounds that may lower cholesterol. 1. It promotes hydration 2. Itâ??s a good source of vitamin C 3. It supports weight loss 4. It improves your skin quality 5. It aids digestion 6. It freshens breath 7. It helps prevent kidney stones