Whey protein can be keto-friendly for some people, but it depends on the individual's specific needs and goals.
The ketogenic diet is a low-carb, high-fat diet that aims to put the body into a state of ketosis, where it burns fat for fuel instead of carbohydrates. While whey protein is a high-quality protein source, it is not inherently low in carbohydrates, so it may not be suitable for those who need to limit their carb intake to stay in ketosis.
However, many whey protein powders are available in low-carb and carb-free options, and can be a useful tool for increasing protein intake while staying within the recommended carb limits of the ketogenic diet.
It's always a good idea to consult with a doctor or a registered dietitian for personalized recommendations based on your individual needs and goals. They can help you determine if whey protein is a good option for you, and can also help you find a keto-friendly whey protein powder that meets your needs.