I am 50 and in my best shape to date. (Still working on it.) I am 5' 4" and 165. I lost 30 pounds a few years ago by cutting out processed foods and lowering my wine intake. I have been vegan for 1 year. During the first 6 months of 2013 I started a regular lifting program. I lost 2 pounds, but gained 7 pounds of muscle. If you have someone that does the BodPod in your area, you can get an accurate body fat/muscle analysis. I have also been able to increase my running endurance. I went from struggling to run 1.5 miles to doing 4 miles easily. I have asthma, so running has always been tough for me. Your body reacts to changes in diet and exercise much more slowly now that it did when you were 20 -30 years old, but it will change. Also, lifting is very good for protecting your bones since you are losing the hormones that protect them. Another thing you start to lose at 50 is your balance. Adding in yoga, Surfset, stand up paddleboarding or skating will help with that. This year, my husband is on board with diet changes. All that bread, crackers, and tortilla chips will not be in house. I am hoping for a great year. Definitely take the time to plan your menus for the week and only buy what is on your list at the grocery. Once you get into the groove, it gets easier. So many vegan meals are made in one dish which makes it easier.