Lemons are full of Vitamins B6 and C, iron, calcium and magnesium. The Vitamin C in lemons is also great at battling free radicals that damage your skin and lead to premature aging. Stomach troubles, like heartburn, can also be avoided by consuming lemons regularly. Lemons are considered to be soothing, whether mixed with tea or just hot water, but this has scientific proof too! Lemons have also been proven to reduce anxiety and depression and calm the nervous system.