Anything that helps you to burn calories will not only help you lose weight but also improve your health.
So Yes, running will help you to lose weight if:
-You do it consistently enough.
-You eat 15–20% less than you TDEE. Please note even if you run everyday for 1 hour, and eat more than your body burns, you will NOT lose weight. This is the fundamental science and it boils down to calorie balance.
Here are few caveats with running:
-Make sure you select appropriate footwear when running or you may injure yourself.
-Running shoes are different than weight training shoes.
Running shoes are especially made for running and have thick soles:
Whereas, the one I use for weight lifting, especially when doing squats or deadlifts are chucks:
-Here is an article on Runners World which discusses the best surface’s to run on.
-Another thing that you also need to take care is the stress you are putting on your knees and on your ankle immediately after a long period of inactivity.
Most people treat fitness as an event and not a lifestyle. After a prolonged period of living a sedentary lifestyle (where they get de-conditioned), they get excited one day and decide to lose 20 pounds in a month.
What they don’t understand is that this creates major stress on their joints, which might lead to a nasty injury that is just waiting to happen. The less conditioned our musculoskeletal systems are, the higher the chances of injury.
Further, it has been shown that the intensity of activity required by a sedentary person trying to improve cardiorespiratory fitness might put that person into a state of excessive overload.
So my advice is to ease into any activity, and gradually build it up.
Include variety, like combining your running with weights, or a sport for maximum weight loss