Frequently swollen and painful gums may be due to a massive deficiency of vitamin C or vitamin B, but most are not due to these causes, and most are due to infections resulting in diseases such as gingivitis and dental neuritis.
Massive vitamin C deficiency may cause the gums to appear purplish, red and painful and bleed easily, including bleeding from eating or brushing. In severe cases, gingival margin necrosis occurs, accompanied by severe bad breath. Vitamin C deficiency is related to diet, and a single food or simple structure can lead to vitamin C deficiency.
Vitamin B deficiency is most often seen as a result of partiality of food, which can easily induce gingivitis or periodontitis, and the gums are swollen and painful.
Therefore, swollen and painful gums are mostly seen in a large amount of vitamin C or vitamin B deficiency, you can eat more oranges, grapefruit, tomatoes and other foods, and do not picky about food daily, such as partiality.