My waist size is 44 inches and my weight is 120kg, can I do Coolsculpting to reduce my waistline?

I would not recommend Coolsculpting for you at this time.  You will be best served by losing weight first.  The amount of Coolsculpting to make a difference will be astronomically too high.  I would recommend going to medically supervised weight loss program and once you get within 15-20 lbs of your goal weight then Coolsculpting can help target the remainding fat.  In our clinic we provide many weight loss programs though HCG is the most popular.

 It is hard to tell without photos. Coolsculpting dissolves fat cells. One treatment dissolves approximately 25% of fat cells, while with 2 treatments you may expect around 45 to 50 % of fat decrease in the area treated. If you have lax skin, then you will have to do another treatment since coolsculpting does not treat skin laxity. Still, Coolsculpting may not be the best option for you since it would require many treatments to see visible results. Coolsculpting is better solution for people who have reached their targeted weight and can not get rid off the stubborn areas of fat. I advise you to make an appointment with board certified provider to get examined and to receive advise on the the options that can yield you desired results. Good luck!