The health benefits of lime include weight loss, improved digestion, reduced respiratory disorders, enhanced immunity, relief from constipation, as well as prevention from cancer and kidney stones. Lime is also used in the treatment of scurvy, piles, peptic ulcer, gout, and gums. It also aids in skin care, hair care, and eye care.
"Predominantly known for its ascorbic acid reserves, lime provides 32% of the daily recommended vitamin C intake. It has high water content and a good source of minerals like calcium, iron, copper, sodium, magnesium, phosphorus, and potassium as well as vitamins like folate, vitamin A, vitamin E, and vitamin K.
The best thing about lime is that it has the least amount  of calories, carbohydrates, and fats. A single serving (67 g) of lime provides 20 kcal of energy. Moreover, lime peel and pulp are also rich in dietary fiber, antioxidants, flavonol glycosides like kaempferol, as well as diverse phytochemicals like polyphenols, limonene, and terpenes."