10 Best Cat Foods for Weight Loss in 2022 (Royal Canin, Hill's Science, and More)

Nulo's Grain-Free Adult Trim is packed with by-product-free protein and promises fatty omega acids to keep your cat's fur glossy. This dry food has a cod-lentil flavor mix and consists of smaller kibble that's great for cats with digestive or oral issues. 

If you're unsure about whether this food is right for your cats, Nulo's online store offers trial packs at two pounds each for half the price of the full-size bags. Cat owners are relieved by the lack of corn or other grains in this wholesome dry food, and they note that it works wonders for weight control too!

Some reviewers have complained the kibble pieces are too small for their cats to chew thoroughly. Otherwise, Nulo Grain-Free Adult Trim is an effective and healthy weight loss food for cats!

Reviewers say that Royal Canin is often recommended to them by veterinarians due to its balanced formula and quality. Appetite Control for Spayed/Neutered Cats is full of fibers intended to satisfy the increased appetites of a spayed or neutered cat.

While it's true that Royal Canin uses corn in this formula, it is well-balanced with pea fiber and plenty of protein-packed chicken and chicken fat. Reviewers have noted that not only do their cats lose weight, but they do so while enjoying their food. The flavor and efficiency of this weight loss food are hard to beat.

Some owners have noted that this formula doesn't immediately curb the appetite of an overweight cat and that their pets did continue to beg. However, almost all have reported successful weight loss, and Royal Canin is among the best quality cat food companies. 

If you're looking for a canned food packed with protein, Hill's Science offers a great option with this Perfect Weight formula! Chicken broth and pork liver provide healthy protein while a medley of vegetables fill this food with vitamins and nutrients. Best of all, there are no animal by-products in this dish.

Owners of cats with food sensitivities note that this canned food has been especially gentle on their kitties' stomachs. More importantly, the weight loss effect is noticeable, and their cats savor every bite.

Some reviewers have been disappointed by the fact that pickier cats don't take to this food. This is a vet-recommended formula, so you should be able to ask your vet for advice on how to switch to this food. Otherwise, Perfect Weight is a great weight loss choice for your cat!

Hill's guarantees all-natural ingredients and zero by-products in their recently re-formulated Science Diet Adult Light. While this formula does contain corn and other grain products, cat owners have noted a marked improvement in their pets' weight and energy. 

Science Diet Adult Light contains not only whole chicken products but small amounts of fruits and vegetables as well. These will provide an excellent source of vitamins and other nutrients for your cat while the Omega-6 acids act to keeps its fur full and shining. 

Some owners have been upset by the change in formula and reported that it caused their cats to vomit. This is possibly due to the addition of chicken fat, which some cats have a food sensitivity to. As long as your cat doesn't have chicken allergies, Science Diet Adult Light is a solid choice!

While Halo's Chicken Paté for Indoor Cats is its most popular flavor, you have a variety of options to choose from that include turkey, seafood, and beef! This is not technically a weight loss cat food, but most buyers of the turkey and whitefish flavors have raved about how well their pets slimmed down.

Halo is proud of only delivering whole meat products, so you can rest assured about the quality of your cat's food. The vegetables in these canned foods are carefully selected to boost your kitty's health and digestive system. 

A common complaint is that when bought on Amazon, the quality of the food seems to plummet. We recommend only buying from pet stores you trust, but otherwise, this is a fantastic and wholesome canned food!

While not an official weight-loss food, Rachael Ray's Peak Woodland Catch has been lauded by cat owners as a well-priced, quality diet kibble for their pets. With an astounding 40 percent protein content, this formula will give your cat a sleek, muscular body after its weight loss. 

In addition to good protein ingredients, Rachael Ray replaced corn and other grain products with more wholesome carbs like peas and carrots, which are soothing for sensitive stomachs and full of bolstering nutrients. Cat owners have been delighted by their pets' weight loss and stabilized digestive issues. 

Some reviewers have noted that the fishy smell of this food is unpleasant to have in the home; if you or your loved ones don't like the smell of seafood, Peak Woodland Catch might not be the right choice for your home. If the odor isn't an issue, though, this is an excellent and nutritious addition to your cat's diet. 

Blue Buffalo's Indoor Hairball & Weight Control provides a solid amount of protein, tons of fiber, ad luxurious nutrients guaranteed to keep your cat's coat shining. Owners confirm that it does away with their cat's hairballs and helps with litter box issues as well. 

While Indoor Hairball & Weight Control does contain several types of grains, it replaces sugary grains like white rice and corn for brown rice and barley. The fibrous pumpkin and flax ingredients are excellent for older cats or cats that struggle with constipation. 

Reviewers have noted that this food isn't as efficient at weight control as it is at hairball control. While some have reported moderate success with weight loss, many report that their tubby cats still have a long way to go. This might be a good option if your cat is only slightly overweight, but it still has plenty of health benefits. 

Blue Buffalo's Freedom Weight Control cat food is free of grains and animal by-products. According to most cat owners, it's also apparently irresistible to cats. Reviewers say that their cats are losing weight, and are doing so while eating food they enjoy almost too much!

Freedom Weight Control is formulated with chicken and turkey as the main sources of lean protein. It also contains pumpkin, peas, and other fibrous ingredients that will bolster your cat's digestive system. This makes it an excellent choice for indoor cats, as they don't get the space for exercise that outdoor kitties have.

Blue Buffalo foods do tend to be higher in carbs than other weight loss foods, and this formula is no exception. Some reviewers have also complained that picky cats tend to ignore this food entirely. If your cat isn't snobby, though, Freedom Weight Control is a good choice! 

Purina offers several specialized diets under their Pro Plan brand, and owners can confirm that the Weight Management dry food is an efficient weight-loss food for their cats. While the chicken flavor on this list does include grains, there's a grain-free turkey and egg flavored option as well. 

Pro Plan Weight Management is jam-packed full of protein, which is sourced from mainly chicken but includes beef and fish products as well. It offers fibers and probiotics that many reviewers have said helps cats prone to vomiting or constipation. 

The downside of this formula is that it does contain poultry by-products. A few owners have also complained that something in the mix also gave their cats severely upset stomachs. If you're concerned, we suggest you consult with a vet first. Otherwise, Pro Plan Weight Management is a decent weight-loss food for cats. 

Not only is Solid Gold's Fit as a Fiddle formula packed with fatty omega acids and protein, but it also includes superfoods like chickpeas that will bolster your cat's health while helping it slim down!

Solid Gold guarantees real meat with no byproducts, so you don't have to worry about the quality of ingredients. There are also fibrous vegetables like pumpkin and peas to balance your cat's digestive system and reduce the risk of hairballs or constipation. 

Owners confirm that Fit as a Fiddle works very well as a weight loss cat food. However, some warn that cats prone to urinary tract issues should not be fed Fit as a Fiddle, as it aggravates their condition. If your cat doesn't have any history of bladder problems, though, Fit as a Fiddle is still a great choice!