Fat loss is ninety nine nutrition based, so if you eat the right stuff then you will definitely lose those 70 pounds. You can also add weight loss supplements to help you speed up the process of losing weight. When, I say nutrition based, it should be a diet which is more on protein and no carbohydrates at all. I personally tried those supplements from http://bit.ly/B00CMHTYWY so you can visit it and read their product reviews. You should try it out and see how fast you will actually lose those extra pounds. I hope I did help you in anyway possible. Good luck!