Additional to the information you can find on Truth About Weight website, there is an event called Open House Programme which is executed in Obesity Clinics around the world.

In the Open House Programmes you will have the opportunity
to measure your BMI, find the right information and if
needed talk to an expert which can help you on the journey
you are in. We also believe that next to this, it is important
to talk and share experiences with other people living with
obesity and this environment can provide you with this.
From here, you can check if your country is part of this programme.
Find your local weight management provider
Talk to your weight management provider about treatment options that could prevent the weight you lose from coming back.