https://theconversation.com/is-it-really-safe-to-feed-your-cat-a-vegan-diet-213356

Most of the health benefits reported for this group also did not reach statistical significance, which may be the result of simply not having enough animals in the study.

The authors reported a tendency towards positive effects of vegan diets. This means there was a general trend (which was sometimes strong), but doesn’t necessarily mean there is a very predictable relationship.

As a survey study, it’s not possible to confirm exactly what the cats were eating. Many of them went outside and may have hunted down meaty treats even while on a vegan diet. Some owners also fed their cats treats and essential nutrient supplements, so any beneficial effects (or a lack of harmful effects) may not be due to diet alone.

Another missing piece of information is how long the cats were kept on the diet. We might assume one year – but this isn’t specifically stated. This is important information since deficiency diseases can take time to develop.

Finally, any study assessing animal health will have inherent limitations if it’s designed as a survey. Pet owners usually aren’t medically trained and their “opinions” can be subjective and therefore biased.

Owners who had removed or reduced meat in their own diet were over-represented in the study. These people may already anticipate vegan diets are better for health, and this thinking could influence their responses.

It’s also worth noting the study was funded by ProVeg International – a food awareness organisation that promotes plant-based products. While this might not have impacted the validity of data, it could have influenced the stance taken when reporting on the results.

I am not convinced that depending on self-reporting of veterinary outcomes from people who are feeding their cat a vegan diet is a reliable way to structure the study

In fact, I would say that purely as a personal and anecdotal conclusion, I believe that the self reporting of an indistinguishable outcome from this study probably means that these vegan diets are harming the cats significantly, if the hidden factor of vegan-diet-feeding guardians underreporting bad outcomes were to be included.

Figure 4 shows the age distribution of tested cats. Most vegan cats have been between 1-10 years while there were many meat fed cats up to 24 years old with a general distribution towards the older ages, while vegan cats drop off sharply after 10 years.

Also there were only 127 vegan cats out of the 1378 overall cats tested. That’s not a significant data set to draw definite conclusions from, especially considering how many old meat cats they lumped into the same pot as young vegan cats. At no point in the study do they clean up for age.

I don’t trust this study at all. That’s what you base the health and wellbeing of animals on?

What were you in for? Sounds to me like someone was pinching pennies on you, since there’s nothing stopping them from including the sugars and aminos your body needs.

Or maybe they thought you were overweight or something, but I’d think that’d be malpractice.