Worse-than-expected hygiene habits

Rigid brushing and flossing can cause gum disease, poor breath, and cavities. Gum disease can lead to heart disease and diabetes, cautions Dr. Natasha Lee, DDS. Cavities might require root canals.

Without showers, germs may proliferate, causing acne, rashes, and severe illnesses, says Janine Frances, CME, LMT. Dermatitis neglecta caused by thick dark plaque might occur.

Blackheads and pimples can result from not removing makeup before bed. Styes and dangerous skin infections can result from left-on eye makeup, threatening blindness.

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Ophthalmologist Dr. Alan Mendelsohn advises against prolonged contact lens usage without cleaning. Extreme eye infections, corneal ulcers, and cornea transplants can result.

Using someone else's toothbrush, razor, or hairbrush spreads illnesses. Oral infections can cause major health issues, hence the American Dental Association cautions avoiding sharing toothbrushes.

Reusing towels, especially at a gym, can spread germs and deadly staph infections. Towels can spread warts and scabies.

Doing so raises athlete's foot and ringworm risk. These disorders can be difficult to treat and cause secondary infections, such athlete's foot.

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