Genetic and Environmental Drivers of Disease

Lead animal scientist Antonia Mataragka of the Agricultural University of Athens has conducted a study that explores the increase in chronic diseases in the animal kingdom. These same diseases are found in both animals and humans.

For example, obesity is widespread in dogs and cats. Being overweight leads to a greater number of cats who develop diabetes. About 20% of pigs develop osteoarthritis, beluga whales have an increase of gastrointestinal cancers and farmed Atlantic salmon suffer from cardiomyopathy. It doesn’t end there, up to 25% of wildlife living in polluted estuaries are developing liver tumors. Even

Marine turtles and fish are developing more tumors.

Mataragka hopes that her research will encourage more coordinated monitoring of both animals, people and ecosystems to identify early warning signs by recognizing shared causes of chronic illnesses and reduce disease risks for both animals and people.

Antonia Mataragka. Beyond Infections: The Growing Crisis of Chronic Disease in AnimalsRisk Analysis, 2025; DOI: 10.1111/risa.70130

Society for Risk Analysis. “Animals are developing the same chronic diseases as humans.” ScienceDaily. ScienceDaily, 17 November 2025. <www.sciencedaily.com/releases/2025/11/251116105735.htm>.

Indoor dogs and cats have a higher rate of certain diseases

Keeping a dog mostly indoors and cats exclusively indoors typically benefits the pet by reducing their exposure to communicable diseases that can be caught from other animals and insects. Yet researchers have found that dogs and cats kept indoors suffer from a higher rate of diabetes, kidney disease and hypothyroidism compared with pets that are kept outdoors.

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The researchers tested 58 varieties of dog and cat food as well as 60 urine samples from dogs and cats and found certain parabens, which are a preservative, in the food and urine samples. They discovered that the highest level of parabens were methyl paraben and the metabolite called 4-hydroxybenzoic acid (4-HB). Parabens are used as preservatives both in human and pet food as well as cosmetics. The use of them is regulated by the FDA.

The researchers found that there were higher levels in dry dog food and less in wet food. Cat food had the highest levels. The researchers also determined that dogs are exposed to parabens through non-food sources as well as food, whereas a cat’s exposure was only from food.

This is the first study to consider the affects of paraben on diseases in dogs and cats. More research is needed to further examine the initial findings.