Brief Answer:
Detailed answer below.

Detailed Answer:
HI ,
*Overweight is mostly out come of wrong life style..(.Over eating, less exerting &excess sleeping). .so there is more caloric intake with less of caloric exhaustion.This is aggrevated by excess of sleep.As a result extra calories in body get converted in fats..these are deposited in body to cause over weight.
Apart from this certain health conditions cause excess fat deposition in body to cause over weight.They are..hormonal causes(thyroid deficiency, insulin resistance &certain organic diseases causing extra fluid deposition to cause oedema (in liver,heart &kidney diseases &severe anemia to some extent.)
*So for loosing weight -following are the basic things to do.
Suitable diet plan with restricted calories
Daily regular exercise in order to loose calories
Optimum sound sleep for 6 hours a day
To get a health check up & investigations
to exclude /get proper treatment for causative health factor.
*A persistent life style, controlling all above factors form an effective way to loose weight.
*Every factor needs an expert advise &care .So you need to consult An expert physician, dietitian, physical exercises instructor,&own a positive will power to pursue the changed lifestyle regularly&sincerely.
I hope that helps you.Any follow up query is welcome.
Thanks.

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