Bleeding gums from eating apples may be caused by periodontitis, pregnancy gingivitis, puberty gingivitis, etc., as follows. 1. Periodontitis: periodontal tissue attachment loss and alveolar bone resorption, patients can have bleeding gums when eating, sometimes accompanied by bad taste in the mouth, gums can be bright red or dark red, edema and flaccid. It can occur at any age. 2. Gingivitis during pregnancy: occurs in pregnant women, during pregnancy due to elevated levels of female hormones, the original chronic inflammation of the gums aggravated, the gingival margins and gingival papillae showed significant inflammatory swelling, soft and shiny, easy to bleed when lightly touched. 3. Adolescent gingivitis: occurs in adolescents, lip-side gingival swelling is obvious, the gums are soft, and bleeding is obvious when probed. Eating apples bleeding gums may have other reasons, it is recommended to go to the hospital in a timely manner, after a clear cause for targeted treatment.