Than food is more harmful, especially attractive it seems. Sometimes it is awfully difficult to refuse to itself hamburger or French fries, but if it is correct to choose similar food, then harm can be minimized.
Try to choose burgers without eggs
In home cuisine of egg are considered as a safe product, even useful, but in a case with fast food restaurants the situation changes. Usually eggs are cooked with a large amount of oil and salt there, as does them more tasty than eggs of a home cooking. You don't benefit from such product, and here empty calories - with ease.
Choose burgers with fish or chicken cutlets
Of course, safe for an organism they won't be too, but will do less harm, than beef cutlets. It is the best of all if burger is with a chicken or fish fillet, but in institutions of fast food it happens not really often.
Choose French fries where it is cooked with the minimum quantity of salt
The less salt will be in your potatoes, the it will do less harm. But it is necessary to understand that salt influences that how tasty will be this dish. And still to make rather tasty unsalted French fries perhaps. Just add a little black or paprika to taste. They won't do harm, and will make taste not such leavened.
Refuse sauces
Sauces they do ""fast"" food tasty and unusual, but at the same time - some of the most unsafe components of such food. Tomatoes in ketchup can seem harmless, but flavor enhancers and additives which increase a period of storage, completely change a picture.