I started another thread on it, but was advised to repost here. The claims made about omega-3 helping with exam results are so discredited that they are now the classic example on "bad science" - yet MN is promoting this advert which is telling anxious parents that they need to be paying for and providing these pills for their children in order to be good parents.
https://www.mumsnet.com/talk/ami_being_unreasonable/5075412-to-think-mn-should-not-be-promoting-discredited-intelligence-pills?reply=135274514
https://www.mumsnet.com/articles/support-children-through-exams