My brother is doing his research paper about diets and weight loss thing. He adviced me to chew food 10 times in order to lose weight.
Is this true??
HOw come??

It could be true, but it doesn't have to be. There is a time lag between when you eat and your stomach feels full and you quit eating. That is the reason for the ten times, to give you stomach time to send the full signal. You can do the same if you swallow and count to ten before you take the next bite.
To loose weight you have to eat fewer calories and excercise more to maximize the loss. Either one, eating less or excercising more will help reduce weight but both together will do it faster.pp

yes it is mostly because it takes longer because it takes 20 minutes to tell ur mind that you are full also it decresses the chance of you choking on your food

Not true. If you want to lose weight, expend more calories than consumed.