Protein is in dairy foods such as milk and cheese, and also in meat, fish, tofu, beans, lentils and eggs. Please read that again if you are interested in losing weight. And trying to will leave you frustrated and often injured. I have a question though… I have read many comments about “the cheat” meal, day in a Keto regime. Unfortunately I’m not able to give medical advice, so it’s best to consult your doctor about the effect of any diet on your health, especially when it comes to specific conditions or surgeries. Hi, I am so much overweight at 78 kg and really wanted to lose my desired weight kg, but then I had an operation.