Its different for each person ... Depends on the individual, size of band, volume of fills, how much they need to lose, how tight will make a difference to them dependent on things including their individual eating habits etc...I have had 8 fills and now am at 10.5mils in a 14mil band but am not tight...but have a level of restriction that allows me to eat maybe 2/3rds of a large plate of food. Long winded response for an answer which is not an exact science. Some people feel a difference just from the band, without even having any fills :sigh: