Please read and correct my writing about Overweight

Overweight
Overweight is most common disease in the modern world specially developed countries. Which is main reason of the overweight? Why people gaining more weight? There are several reason for that by mine. Those are below:
• Physical inactivity and lifestyle – Most of people who live in city have very physical inactive daily routine. Morning they drive car or take subway from home to work, during work-hours they sit on office chair, after work they again drive car or take subway to home. Evening also they sit on sofa and watch TV until go to bed at home.
• Eating habit and foods – World population increasing decade to decade that is need more food for them. Some of food producer uses more powerful fertilizer, some of farmer uses more powerful vaccination for great amount of product per short time. Not organic or genetically modified food is one of reason of overweight. If food added some chemical substances or their ingredient consist of genetically modified materials which have more calories than organic one.
Also modern people’s eating habit is one of factor for overweight. Some people eat more fatty foods, a lot of meat twice to three times daily.
• Also some of research show that our daily lifestyle more depend from internet and mobile and smart device even we are eating. So a person is eat more who chat with friends on Facebook and read some tweets on twitter during eating.
How we fight overweight.
We choose walk instead of drive car or take bus, subway in available distance. If someone want to lose weight or not to add more weight who must do exercise on gym or running twice weekly, at least.
Then we change of eating habit and foods. Eat more natural foods especially organic green foods. Also we should change our lifestyle. From physically inactive lifestyle to physically active lifestyle, example: hiking mountain during weekend or walk around the park. Finally my advice is: Don’t eat more but do more exercise.