If you want fast relief for backaches, muscle spasms and inflammation of that region, lemon juice may be your best bet. Citric acid, along with many other antioxidants and vitamins, can act quickly on inflamed or sore muscles to relieve swelling and stimulate blood flow to the area. This can speed up the healing process of any tissues that may be strained or torn. On the other hand, backaches can occasionally be caused by poor dietary habits or even certain kidney diseases. Lemon juice can also be drunk directly to help optimize digestion and improve renal function, helping to ease backaches in another way!
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