Medium Density Fiberboard (MDF) is a manufactured wood product used in a variety of industries. The manufacturing process includes some chemicals which may be hazardous to humans, leading to concerns about the health risks of MDF. There are two primary health risks of MDF: exposure to the chemicals used to make it, and wood dust. By being aware of the potential health risks of MDF, people can protect themselves when they work with it.

To make MDF, a company shreds wood, softens it, and turns it into a fine powder. The powder is combined with resins and other bonding agents and compacted into solid boards. A number of different woods can be used to make MDF, and the material is also sometimes treated to be fire, water, or stain resistant. Many lumberyards sell varying types and widths of MDF for an assortment of uses.

Toxic chemicals are one of the major health risks of MDF. The chemical of most concern is formaldehyde, which can aggravate asthma and other lung conditions, irritate mucous membranes, and cause contact dermatitis. Studies on formaldehyde also suggest that it is a likely carcinogen, and it should be generally avoided. During the manufacturing process, personnel should protect themselves with respirators and adequate clothing. When cutting or working with MDF, nose, mouth, and eye protection should be worn. Finished MDF may also offgas, raising concerns about its use in the home. MDF should never be burned except in adequately ventilated facilities.

The second issue with MDF is wood dust. Wood dust is especially problematic for the airway, and it may be a possible carcinogen as well. Protective gear will reduce this health risk greatly, and finished MDF rarely poses a health risk through wood dust, since it should be properly sealed. MDF should always be cut and processed in well ventilated locations to reduce the risk of inhaling wood dust.

The health risks of MDF should certainly be taken into consideration when the wood is used, but they should not rule out the use of MDF altogether. Especially for outdoor use, MDF can be versatile, sturdy, and perfectly safe. The health risks of MDF due to potential off gassing should be a source of potential concern, however, especially to parents, since children are very sensitive to respiratory irritants. Employers also have a responsibility to ensure that their employees are protected from the health risks of MDF with appropriate work equipment.