Why does running help lose more weight than other exercises???

it doesn't necessarily
Cardio (running) is just what is means...for your cardiovascular system. When you reach your target heart rate you are starting to burn fat.

When you burn fat with out adding so much muscle you lose the weight a lot faster. However, it is easier to come back on. If you add strength training to your workouts you will be able to sustain the weight loss a longer period of time.

Running is a great way to just get your heart healthier and to lose those extra few. If you do cardio 30 minutes a day, you lower your risk of heart disease and obesity.
Running’s good because it also strengthens joints due to impact.

BUT swimming is also very good because it get lots of muscles working together meaning more energy is being used. Probably better in my opinion.
well not necessarily. Intensive high repetition weight lifting will actually burn off more fat and muscle then running (depending of course on factors of routine patterns as well to ensure your body is continually challenged).
running tends to suppress the appetite while other forms of exercise stimulate it. so you tend to eat less
It doesnt all excercise in some form will reduce weight if you keep it up.A general all round fitness program is the best both for your health and weight.
because usually your heart rate is much higher
heart rate - burn more calories