I had liposuction all over my body 3 years ago, would it be safe and effective to have it done again to contour the body further?

Possibly: If there's still some pockets of residual fat, then secondary liposuction (or perhaps coolsculpting) could be used to further shape your contours. However, if it's really just some zones of loose skin, then lipo would not help with that. Best to see your local plastic surgeon to discuss the options.

Depends: Liposuction is not a substitute for diet and exercise. Repeat liposuction can be done if your surgeon feels that there is sufficient fat to remove without leaving visible marks from the procedure itself. Use your procedure as part of healthy lifestyle. Patients who undergo liposuction then gain weight can have significant body fat distortions.

Possibly.: Assuming you are a good candidate for the procedure, it is likely “safe” to proceed with additional liposuction surgery. Good candidates for liposuction surgery are patients who present with diet and exercise resistant adipose tissue with good quality overlying skin elasticity. Best to have achieved a long-term stable weight prior to proceeding with liposuction surgery.

Re-do Liposuction: It should be as safe as before. Sometimes there is some more scarring in certain areas but for the most part it should be a safe procedure. Touch up liposuction are common after the original procedure.

Lipolysis or Wt loss: In most cases of liposuction only some of the fat cells will get removed. If you are close to your ideal body weight and have minor areas of lipodystrophy to address or if you have regained the weight then further liposuction will help. Generally speaking, we don't increase our fat cells as adults, we just expand and fill the ones we have with weight gain or decrease their size with weight loss.