He is advised to go on a strict diet.

He has been on a diet for two months.

Should I watch my diet?

Should I watch my diet?

I'm on a diet.

Sally has been on a diet since last month.

The number of anorexic high school girls practicing extreme dietary restrictions is increasing.

It's good to use small plates if you are dieting.

She is on a diet.

I don't like being on a diet.

My mother is on a diet.