In Boston, Dr. Margaret Naeser uses a LED light helmet to treat PTSD victims. "There are 1.7 million cases of traumatic brain injury right now in the United States and we don't have a really good treatments for them. We give them cognitive rehabilitation therapy which is very important but we're doing the photon work and light therapy to give the cells more energy to work with." Find out more about light therapy.

For more treatments watch, The Brain's Way of Healing

The Wild Canadian Year

Wild Canadian Year

Visit our website to watch the series online, discover extra behind-the-scenes stories and view Canada's nature scenes in 360. Visit Wild Canadian Year

From CBC Kids

The Nature of Thingies