Can brewer's yeast for humans be given to cats? - briefly
Brewer's yeast intended for human consumption can be safely given to cats in small amounts. However, it should not replace a balanced diet and should be introduced gradually to avoid any digestive upset.
Can brewer's yeast for humans be given to cats? - in detail
Brewer's yeast, commonly used in human diets as a nutritional supplement, is not recommended for cats due to several factors that make it unsuitable for their unique physiology and dietary needs.
Firstly, brewer's yeast contains high levels of protein and B vitamins, which are beneficial for humans but can be detrimental to cats in excessive amounts. Cats have specific nutritional requirements that differ from those of humans. They are obligate carnivores, meaning their diet should primarily consist of meat-based proteins. Brewer's yeast, being a fungus, cannot provide the essential amino acids and nutrients cats require from animal-based sources.
Secondly, brewer's yeast can cause gastrointestinal upset in cats. The high protein content and B vitamins can lead to symptoms such as vomiting, diarrhea, and loss of appetite. These symptoms can be particularly problematic for cats with sensitive stomachs or underlying health issues.
Additionally, brewer's yeast is not easily digestible by cats. Their digestive systems are adapted to process animal proteins efficiently but struggle with plant-based proteins like those found in brewer's yeast. This can result in nutrient malabsorption and further gastrointestinal issues.
Furthermore, the use of brewer's yeast as a flea repellent, sometimes advocated for cats, is not supported by scientific evidence. While it may have some effect on human skin due to the presence of B vitamins, there is no reliable data showing that it works effectively against fleas in cats. Relying on brewer's yeast for flea control can lead to unnecessary health risks and should be avoided.
In conclusion, while brewer's yeast offers some benefits to humans, it is not suitable for cats. Cats have specific dietary needs that are best met through a balanced, meat-based diet formulated by veterinary nutritionists. It is essential to consult with a veterinarian before introducing any new supplements or foods into a cat's diet to ensure their health and wellbeing.