Plaque and Tartar Buildup
Plaque is a sticky film of bacteria that forms on your teeth and gums. If it’s not removed regularly, in the long-term plaque buildup can harden into tartar, which can irritate your gums and cause them to bleed.
Keep in mind that plaque is the beginning stage of tartar (and a lot of other dental issues), it can be prevented with a good oral hygiene routine that includes effective brushing, flossing, and rinsing with an antibacterial mouthwash.
Tartar, on the other hand, cannot be treated at home and requires a dental professional with special tools and training to remove it.
Gingivitis and Periodontitis
Gingivitis is the earliest stage of gum disease and is characterized by red, inflamed gums that may bleed from time to time. Periodontitis is a more advanced gum disease that can result in irreversible damage to the tissue that supports your teeth and the bone underneath.
Medical Conditions
Bleeding gums can be a sign of an underlying medical condition in your body, such as:
Diabetes
Leukemia
Hemophilia
Pernicious anemia
HIV/AIDS
Thrombocytopenia
If your gums bleed regularly no matter what you do, visit a dentist or a general practitioner right away for a more thorough diagnosis.
Blood Thinners
Depending on your age and other medical conditions, your bleeding gums may be caused by blood thinners. Blood thinners are necessary medications for many conditions and should not be stopped without a doctor’s guidance.
Keep in mind that some blood thinners are prescribed to be taken long-term, while others are prescribed for a few weeks only.
If you’re on blood thinners of any kind, use a toothbrush with very soft bristles and soft floss to reduce any discomfort associated with oral care and to reduce your risk of bleeding gums.
Brush and floss gently; don't apply too much pressure. Be sure to wear a mouth guard if you participate in a contact sport because blood thinners will make you more susceptible to bleeding in the event of a mouth injury.
Hormonal Changes
Hormonal changes are another common cause of bleeding gums. Females are more susceptible to these changes as they go through puberty, pregnancy, and menopause, but males can also experience hormone changes that can result in bleeding gums.
Vitamin Deficiencies
If you’re not getting enough of certain vitamins in your diet, your gums may start to bleed. The two most common vitamin deficiencies involve vitamin K and vitamin C. If you think a vitamin deficiency may be the cause of your bleeding gums, add these foods (among others) to your diet: