Please can you check my composition. thanks everybody

In recent years, fast food HAS BECOME ( OR: nowadays, ff is becoming; recent это маркер Present Perfect) more and more popular (or:has gained popularity) although A LOT OF/QUITE A FEW medical tests prove that it can harm our health greatly/CONSIDERABLY/A LOT. Many scientistS using mass media (так хотя бы понятно, что это определительный оборот, здесь не место обстоятельства; не следуйте за русским порядком слов) encourage people to abstain from fast food as it contains fats which can/are believed to cause cancer, obesity and other serious diseases. It is claimed that fast food can even BECOME ADDICTIVE especially if YOU (передает безличность) is getting used to it since childhood.(Present Continuous рядом с since - это нонсенс, тогда уж Present Perfect Continuous).

In my opinion, firstly, people prefer eating in a fast food restaurants (неопред. артикль со множ. числом? ) because the food there is very delicious /tasty. FAST FOOD CHAINS add VARIOUS TASTE-IMPROVING condiments to their product which are created in special laboratories supported by them and cannot be bought in usual markets (FREELY?).

Secondly, you do not need to spend time (on) cooking. Many people have to work long hours and after arduous working days they are too exhausted to cook or sometimes it may happen that THEY are simply in NO mood for cooking.

Thirdly, VISITING A fast food OUTLET is much cheaper than EATING AT A restaurant, you do not have to wait for a waiter to serve you and to pay tips. Moreover, the environment in fast food restaurants IS more friendly and relaxed. Entertainment IS OFFERED TO children who become additive to HAMBURGERS AND FRIES. In the future it will take A LOT OF effort ON THEIR PART to overcome the FAST FOOD habit
I THINK THAT to solve this problem subsidized canteens should be OPENED and people SHOULD BE BETTER INFORMED about THE benefits of natural food.

As for me, I prefer eating in/TO EAT IN AND COOK/ and cooking myself, but I HAVE A GUILTY SECRET: several times IN MY LIFE I ate AT fast food restaurants because I was too hungry and had no time for cooking .

На нетрансгенные жиры уже Макдональдс перешел, кстати. Хотя любое рафинированное масло неполезно.
Самый главный вред не указан - что картошка фри, например, жарится в одной и той же порции масла, пока оно не станет реально вонять. И картошка, жареная во фритюре имеет очень высокий гликемический индекс, который способствует быстрому набору веса.

Неплохо. Кстати с вышесказанным согласен.

In recent years, fast food is becoming more and more popular. Although many medical tests prove that it can harm our health greatly. Many scientists using mass media encourage people to abstain from fast food as it contains fats which can cause cancer, obesity and other serious diseases. It is claimed that fast food even can cause an addiction especially if a person is getting used to it since childhood.

In my opinion, firstly, people prefer eating fast food in restaurants because the food is very delicious there. Companies providing fast food add different condiments to their products to improve taste and which are even created in special laboratories supported by them and cannot be bought in usual markets.

Secondly, you do not need to spend time on cooking. Many people have to work long hours and after arduous working days they are too exhausted to cook or sometimes it may happen that if you are simply in a bad mood for cooking.

Thirdly, fast food is much cheaper than restaurants and you do not have to wait for a waiter to serve you and to pay tips. Moreover, the environment is more friendly and relaxed in fast food restaurants and many entertainments are created for children who become additive to fast food and in the future it will take much efforts from their side to overcome the habit of eating fast food.

In my view, in order to solve this problem subsidized canteens should be built and more propaganda to be spread to people about benefits of natural food.

As for me, I prefer eating healthy food and cooking myself, but I must admit that several times I ate in fast food restaurants because I was too hungry and had no time for cooking .

GOOD COMPOSITION!!! I LIKE IT!!! BUT BE ATTENTIVE!