According to expert Sebastian Arieta, storing a toothbrush in a humid environment increases the risk of infection.
Bacteria multiply rapidly in damp conditions. Keeping the toothbrush in the bathroom is a common mistake.
Hermetic plastic containers also promote microbial growth because moisture is trapped. The brush should dry completely after use.
The expert recommends storing the brush upright with the head up. Replace the toothbrush every three months or after illness.
