Diet and exercise
You can loose much more weight by adopting a healthy diet
of lean protein
, fruits and veg, whole grains and healthy fats (in moderation), than anything else.
is an important part of a healthy lifestyle, and not only wil help weight loss, but improve many other health aspects.
Make sure you don't do too much too soon, and consult a doctor before you start anything new.
Answer assisted by Ken Starnes, Medical Student