Cut out the sweetners !! ~ Ways to help your clients lose weigh??

Ok can I please have your views on the latest research ( and not being rude or anything when I was at uni most psychology research was done on students who were either tired or hung over !, just joking :), well a bit ) which states that sweetners actual can cause weight gain due to preparing the body to have something sweet and when it doesnt get that it then looks for an alternative way and so people reach for either something carby or sweet. 

Any other views on aspartame addiction etc . Has anyone treated anybody for diet coke/ pepsi max addiction for example

http://www.holisticmed.com/aspartame/recent.html

http://www.rense.com/general82/assp.htm

http://www.dailymail.co.uk/health/article-1378109/You-CAN-diet-coke... ( Ladies you might like this link , sorry guys !!)