Don't get fries. Don't get a drink with sugar added. Definitely don't get a milkshake or cookies.
The burger itself is fine. You wouldn't go to Subway for a nice sandwich and drink a liter of Coke afterwards and a bag of chips and complain about how unhealthy it is.
Here you can get some nice fresh crispy raw carrots instead of fries.
The problem is, McDonalds meals are not healthy, full stop:
Mcdonald's - Big Mac Meal With Fries and Coke With No Onions
http://www.myfitnesspal.com/food/calories/mcdonalds-big-mac-...
1130 Calories, and 67 grams of sugar. Call me when McDonalds modifies their meals to consist primarily of protein/fat calories.