Some household cleaners may be harmful separately or when combined such as ammonia and bleach. Crafts Many people engage in some form of art or craft as a vocation or hobby. While art is a creative, individualistic pursuit, the materials used may pose a risk to individual health and the environment. Knowledge about the materials and processes is the best protection against the major and minor health effects of the art or craft. A wide range of health effects are linked to materials used in the arts and crafts, depending on the substance, the dose, the duration of exposure, and the susceptibility of the person exposed.
Many solvents affect the central nervous system and are skin and eye irritants.
Several are known or suspected carcinogens such as benzene and toluene. Heavy metals are hazardous both as dusts and as fumes. Lead affects the nerves, digestive system, muscles and joints. Arsenic, cadmium and chromium are known carcinogens. Mercury, copper, cobalt, silver, manganese, selenium and zinc are all acutely toxic.