If the problem is emotional such as low self esteem, where the extra weight is an excuse for you, then more than one session may be required. This would be to overcome the underlying problem and when this has been achieved the weight loss session is then used.  It is impossible to be totally accurate as to how many sessions this would take due to the individuality of each person but normally 4 sessions would be all that is required (as opposed to conventional Hypnotherapy which would take between 8 - 15 sessions).
CDs are also provided to reinforce your ongoing results.