My cat loves this stuff so much and I noticed a huge difference

I have an indoor cat thats 9 years old and is very picky about what she eats, usually after half a bag of food she is no longer interested and i have the trouble of finding something different. She has been eating the Purina Healthy Life now for almost a year and LOVES the taste I can't get it in the dish fast enough for her. her coat is become much more shiny and she seems to be more active.