I'm a 24 years Old male. My height is 5 ft 9 in and I weigh 100 kgs. I work in an IT company. A month back I ran a 5 km marathon. After the marathon I had a severe back pain, but it lasted for only a week. But again from last 2 days I am having similar pains. I wanted to know if this is due to my over weight or can it be anything else?

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