Сочинение на тему : it is belived that young people today ate not as healthy as they were fifty years ago.

To my mind, nowadays teenagers are not as healthy as 50 years ago.  it is because of the  fast-food, the  pernicious habits etc.  lots of teenagers computer addicted  and don't  walking and doing sports. nowadays many young people are overweight or suffer from different diseases as a result of wrong food and lifestyle. firstly, teens today eat lots of harmful food, with a lot of  carbohydrates and fats. many kids and teens  prefer mcdonalds instead of home meal. actually , teens usually ignore their parents' advice to eat more fruits,  vegetables and dairy products.  secondly, nowadays teenagers often smoke, drink alcohol and take drugs.  it breaks down their health,  this is compounded by polluted water and genetically modified food. fifty years ago the situation on our planet was better, there were not so much junk food in stores and teens preferred to spend time on the streets. in conclusion i would like to say we have to  pay more attention to our  health.  i suppose if we  will change our lifestyle,  we'll be healthy.

Если я не ошибаюсь то в данных предложениях its-его