A disturbing trend related to exposure to burn pits while deployed, recently detailed in a Wounded Warrior Project survey, has been noted by the Department of Veterans Affairs. But more research is needed before any changes to presumptive illnesses and benefits can be considered, according to a top VA official. The VA currently lacks the scientific evidence to establish a causal relationship between exposure to burn pits and a variety of illnesses, but the WWP survey released last week will be taken into account, said Dr. Carolyn Clancy, the VA's deputy under secretary for Discovery, Education and Affiliate Networks. Read more on Military.com.