Yes, probably, at least in the short term. Current health and weight research seems to suggest that the average weight gain for both men and women who quit smoking is about 6-8 pounds. The more you smoke, the higher the risk of weight gain when you quit.
This weight gain is due to the decrease in metabolic rate and the increase in appetite experienced when you quit smoking.
In addition, it is possible that the type of foods chosen to compensate for the absence of cigarettes may also be responsible.
Studies show that increasing exercise combined with an increased intake of fruit and vegetables can help to minimize weight gain after quitting smoking.