I am 41 and was 157 pounds when I started the Joy Nutritionals 511 System. My goal weight was 135 pounds, which I was able to achieve after just over two months on the program. In the first week, I have to admit I was hungry, irritable and suffering from caffeine withdrawals. After getting through that first week though, I felt much better and only occasionally felt hungry while using the system. The biggest change for me, which I will continue using in the future, was learning what a good portion size looked like. Learning the right portion size for me has changed my relationship with food and will help me continue to be successful in maintaining my goal weight. Lastly, the weight loss has also helped reduce my joint pain, which is a great additional benefit!