If actually serious about losing your kilos of fat, watch 'That Sugar Movie', I think it's on Netflix. A pretty big eye opener to the amount of sugar in everyday processed crap, and it's effect on the body.
iirc, 4g = 1 teaspoon of sugar.
Look at the back of the drinks in the 7.
Those little cans of Birdie coffee etc, 4 or 5 teaspoons of sugar in 'em. Those 12 baht cartons of Oishi lemon tea etc, 4 teaspoons of sugar in them. If making a small cup of lemon tea or coffee at home, would one put 4 or 5 spoons of sugar in it? It's an interesting watch if looking to shift the lard and have a healthier lifestyle.