Silverfish are not harmful to humans. They do not bite, sting, or carry diseases, so they don’t pose a direct health risk. However, they can be a nuisance and may cause indirect issues by damaging household items like books, paper, fabrics, and pantry staples, and by contributing allergens from shed skins and droppings in sensitive individuals. Keeping humidity low, sealing food, and storing items in airtight containers can help reduce infestations. If an infestation is widespread, professional pest control guidance may be useful. [sources indicate no direct health risk but potential material damage and allergen exposure]
