DHEA stands for Dehydroepiandrosterone. DHA stands for Docosahexaenoic acid (an omega-3 essential fatty acid) and Dihydroxyacetone. Some studies suggest that a lack of omega-3 fatty acids is associated with certain ADHD symptoms. and it has therefore been suggested that diet modification may play a role in the management of ADHD. People with ADHD were found to have significantly lower plasma phospholipids and erythrocytes omega-3 fatty acids. Their intake of saturated fat was found to be 30% higher than in controls, while the intake of many other nutrients was not different. In support of the idea that it is not the intake of essential fatty acids that causes low tissue levels, a preliminary study showed that exhaled ethane, a marker of omega-3 fatty acids peroxidation, was higher in children with ADHD relative to controls. Researchers from Australia's national science agency showed polyunsaturated fatty acids to provide "medium to strong positive treatment effects" in ADHD.