As the title asks, does senior food contain less calories? My girl was diagnosed with hyperthyroidism about a year ago and we soon got her levels back to normal - she's stopped howling, being hyperactive, begging for food, so all is good there. However, she lost quite a lot of weight before being diagnosed and has never put it back on. The vet isn't overly worried about this, although, in the ideal world it would be good if she put a little back on. Just wondering if putting her back on normal food would add a few calories.