How to reduce weight, if i am having herniated lumbar disc?

Try low impact: Reducing calories can produce weight loss, but exercise makes it a bit easier. Exercise that does not "jar" or load the back will usually be more comfortable and may also help you feel better. Often water exercise can help a person burn calories with low back stress (swimming, water walking, water aerobics). Other options include elliptical machines, bicycling, perhaps walking.

Disc and exercise: Swimming and stationarybikes and eliptical trainers are low impact and well tolerated.

Diet: Loose weight, cut out carbs, pool exercise, elyptical machines.