5 reasons your senior cat is losing weight (even though she keeps eating)
She finishes her bowl. She asks for food. She's not refusing meals. And every time you pick her up, she feels a little lighter.
Her appetite isn't the problem. What she's eating just isn't adding up for her anymore. There are five reasons why, and one sprinkle handles all of them.
She's eating. So why is she getting thinner?
Senior cats may need up to 25% more calories per pound just to hold their weight.[1]
As cats age, their metabolism changes. Their bodies get worse at using the calories they eat. A bowl that held her weight at 8 is quietly short-changing her at 13. Her food hasn't changed. Her body has.
Feeding more is the obvious move. But older cats have smaller stomachs and smaller appetites, so it doesn't work. You can't fix this with bigger bowls.
Chronic illness cuts into how much nutrition her body actually absorbs.
Kidney disease, hyperthyroidism, IBD. These are the most common conditions in senior cats, and they all get in the way of absorption. Her food passes through, but her body holds onto less of the protein, fat, and calories in it. She can be eating well and still running on empty.
"Keep her weight up," your vet says. The hard part is less about getting food in her bowl and more about keeping any of the nutrition that lands there.
Standard cat food isn't built for the calorie demands of an older cat.
Most wet and dry food is made for adult cats at maintenance weight. It's not made for an older cat with a slower metabolism and worse absorption. There's nothing wrong with the food. There's just not enough in it for where she is now.
Senior-formula food helps, but it rarely closes the whole gap, especially for cats with something else going on.
Pain, meds, and stress quietly raise how much she burns without raising her appetite.
Chronic pain, low-grade illness, medications. Her body's burning extra fuel to deal with all of it, while her appetite goes the other way. You see the result later, as slow, steady weight loss.
You're not doing anything wrong. The biology is just working against her.
More food won't fix this.
One sprinkle can.
When her metabolism, absorption, food, and energy needs are all pulling the wrong way, you can't eat around the problem. The answer is denser food, not more of it.
Ready Cal® Powder packs 9 vitamins, 6 minerals, and chicken fat, which is the calorie source cats use best, into a sprinkle she won't even notice.
See Ready Cal Powder →Why Ready Cal® Powder works when food alone doesn't
Six reasons owners of eating-but-thinning cats keep a jar on hand.
What to expect
What most owners see.
From first sprinkle to a steadier scale.
It blends into her food. The chicken smell is one she already knows. No coaxing, no new bowl, no drama.
Most owners see her get more alert before they see anything on the scale. A higher calorie floor shows up in behaviour first.
After a month of daily use (same food, one sprinkle per meal) most owners see her weight hold steady. A lot see it start going back up.
What owners of eating-but-thinning cats say
Verified buyers · 10,000+ cats helped
"My 21 year old cat loves this stuff! She is rather finicky with her food in her golden years. This gives her the extra vitamins and calories she needs to keep her feeling better."
21-year-old finicky cat
"I have purchased several calorie supplements for my senior calico Lucy, but she's never been interested. I gave Under the Weather a chance and Lucy likes it! I feel better knowing she's getting that little extra nutrition."
Senior calico, previously refused all supplements
"I have an older cat named Brownie. I am so happy with your product because Brownie really likes it. She eats well but she is old and now I feel I'm doing the right thing for her to get vitamins."
Older cat with good appetite
"I can no longer feel the bones along her back. I believe this product has given us more time with her."
20-year-old senior cat
Ready Cal® High Calorie Powder For Cats
Rotisserie chicken flavor · Made in Vermont · No artificial additives
$24.99
- Sprinkle it on any food. She won't even notice.
- Rotisserie chicken flavour cats actually go for
- 9 vitamins, 6 minerals, chicken fat for dense calories
- Safe alongside whatever your vet has her on
FAQ
Common questions
How is this different from just buying senior-formula food?
Senior formulas are a good start, but they rarely close the whole calorie gap, especially for cats with something like CKD or hyperthyroidism going on. Ready Cal Powder layers on top of whatever food she already eats. You get dense calories and micronutrients without changing her routine.
Will she taste it in her food?
Most cats don't notice it at all. The rotisserie chicken flavour blends into wet or dry food. Some cats actually seek it out once they've had it. If yours is reluctant at first, start with a smaller amount and build up.
Is it safe for cats with kidney disease?
It's made to work for most senior cats, including those with CKD. If your cat is on a prescription renal diet, show the label to your vet. Most vets are fine with it as an extra calorie source.
How soon will I see weight changes?
Behaviour changes (more alert, more curious) usually show up in the first week. Weight takes 3 to 4 weeks of daily use. The important thing is consistency: one sprinkle per meal, every meal.
Is this a substitute for veterinary care?
No. If your senior cat is losing weight, please take her to the vet. Unexplained weight loss has a lot of possible causes, and most of them need a diagnosis. Ready Cal Powder works with your vet's plan. It doesn't replace it.
Sources
- Cline MG, et al. (2021). 2021 AAHA/AAFP Feline Life Stage Guidelines. Journal of Feline Medicine and Surgery, 23(2), 211–233. Senior cats may require 10–25% increased daily energy requirements due to declining digestive efficiency. Perez-Camargo G. (2004). Cat nutrition: what is new in the old? Compendium on Continuing Education for the Practicing Veterinarian, 26(Suppl):5–10. Found reduced fat digestibility in 1 in 3 geriatric cats. pubmed.ncbi.nlm.nih.gov/33627003
Ready Cal® Powder for Cats
$24.99 · Savory chicken · Ships today
