Is it so that without any changes in diet the slimming centres lead to weight loss?

Is it so that without any changes in the diet the slimming centres lead to weight loss?
It is not true without any change in diet the definitely changes. Most of the slimming centres employee dieticians and people wanting to lose weight are prescribed are given the ideas that they don’t have to work hard on diet instead the machines or gyms will reduce their fat, people start believing because they really lose weight that is mostly due to the diet and not due to the machines.