Long ago (1497), the British sailors on long voyages never reached their destinations because they got sick and some had painful deaths. James Lind, an English doctor, noticed that this strange disease (Scurvy) began after the supply of fresh fruits and vegetables ran out on the boat. As a way for trying to find a cure, he gave each sick sailor a daily drink of lime juice and they got better! This was because they lack vitamin C.
Gingival inflammation or swollen gums, occurs when plaque (sticky deposit) build-up containing bacteria on teeth and produces toxins that irritate the gums because of poor dental hygiene or because the saliva is too acidic. In pregnancy is exacerbated during a period of progesterone and estrogen imbalance. These hormones cause increased vascularity of connective tissue (increased blood flow to the mouth), making the gums friable and thus contributing to gingivitis.