New studies have revealed that ex-cannabis users who have been dieting or who have been subject to stress months after using the drug could still produce positive results in drug tests.
Also studies by Paul Thompson and colleagues from the University of California in Los Angeles have revealed that body fat levels may be linked directly to brain shrinkage. Overweight people were found to have smaller brain sizes than those who were lean.
Janine Young is a freelance science writer, Immunologist and also a broadcaster for New Scientist magazine.
Listen/Download Janine Young on Dieting, Cannabis and Shrinking Brains
