Possible to Lose Weight by Using Invisalign?

We generally don't promote this as a diet aid, but the average loss during treatment is 15 lbs. We noticed in our "after" pictures the changes, so we mention it during consultations.

Snacking is more difficult while wearing aligners so it is possible to lose weight if you snack throughout the day. If you were to lose weight, you would most likely gain it back after Invisalign treatment is completed 

With the wearing of Invisalign aligners, you'll eat fewer snacks and sugar during the day. It's just too much work to eat a cookie then brush, floss, and put the aligners back in. Patients usually resort to protein drinks or beverages and they do lose some pounds over the course of treatment.

I am currently wearing Invisalign, and it makes me a lot less likely to snack.  I have not seen significant weight loss from it, however if you are a big snacker -- Invisalign may discourage the snacking.

Wearing your aligners for the prescribed 22 hours/day minimum can certainly curtain snacking. It depends on what your normal eating habits are like. If you tend not to snack, having 3 meals a day should not affect you. If you tend to snack throughout the day, you may find that you will cut down on that and that could cause some weight loss.