At present, formaldehyde has been identified as a carcinogenic and teratogenic substance by the World Health Organization. An indoor concentration of 0.5 mg/m3 will cause the eyes tearing and abnormally allergies. Chronic Exposure to Low Dose Formaldehyde Causes Chronic Respiratory Disease, Nasopharyngeal Carcinoma, Colon Cancer, Brain Tumors, Nuclear Mutation.
Formaldehyde has irritant effects on the skin and mucous membranes, such as the throat and the nose and the eyes, causing edema, inflammation, ulceration, and even severe lesions such as nasopharyngeal cancer. Skin has contacted with formaldehyde may cause allergies. In severe cases, it may even cause hepatitis, pneumonia, and kidney damage.
The harm to the pregnant women of infants and young children is more serious, which can cause to the growth and development of the fetus during pregnancy, and the development of heart and brain is incomplete, which can seriously lead to serious consequences such as fetal malformation and miscarriage. Exposure to formaldehyde during pregnancy may increase the risk of spontaneous abortion.