When my 2 older Persians started acting like they were losing weight I knew it was time to change foods. I did a ton of research and finally settled on this. When you have 7 cats and no real way of keeping them out of each others food you have to pick something that can work for everyone and this food does just that. I immediately saw an improvement on my older 2 cats and even all of my younger ones like this food better than the last. I do not see us going back anytime soon.