Can being too clean make you sick?

According to an article by HealthDay News, overexposure to antibacterial soap, which contains the chemical triclosan, may lead to increase risk for hay fever, allergies. So it turns out being too clean can make people sick. This study also found that exposure to high levels of the chemical bisphenol (BPA) may weaken an adult's immune system. Triclosan is an antimicrobial found in many antibacterial soap, toothpaste, diaper bags, and medical devices; BPA is used to make many types of plastic. According to the article : "The triclosan findings in the younger age groups may support the 'hygiene hypothesis,' which maintains living in very clean and hygienic environments may impact our exposure to microorganisms that are beneficial for development of the immune system" .