In my honest opinion - not at all, losing weight is simple - not matter what you've heard on TV before, be assured that you can lose weight as simply as making a minor change in your meals.
It's not like you have to work out two hours a day, 6 days a week - no, not even close to the truth. And you also can't buy a 6 pack, or a magic weight loss pill, they're gimmicks, placebos at best.
So what in the world is so simple to losing weight? Well, to start off, you should make a change in your meal plan, right here, read this for clarification.. The second thing you have to do is run.
Noooo, not away! On second though, you might not even have to run. Cardio is what you need, 30 minutes per day, to be exact. Every day sounds impossible for many, you can start off slower, 4-5 days per week. BUT I am almost completely sure that you can squeeze in 30 minutes of cardio every day, as long as you want it. What is cardio? Anything that makes your heart beat at the 70% - 85% of it's maximum. Sounds easy, and it is. For many walking fast is enough, sports count too. Obviously, younger people will need to walk quite fast, so swimming or playing sports is much easier for them. There are many things you can do if you don't like walking, for example, this. If you're already doing simple cardio, you can try this out.
To conclude.. Why do any of this? Well, obviously to lose weight! However there are many benefits to cardio, such as this. If you are thinking of taking up cardio, make sure to not make common mistakes, and, water!