Terry is happy to provide his opinion on diet and nutrition, supplements and lifestyle choices. This information is for educational purposes only. It is not meant to replace the advice of your physician and is not to be considered medical advice, diagnosis or treatment. Should you have any concerns please contact your physician directly.Q. Dear Terry, “I would appreciate your thoughts regarding the “blood type diets” that are out there. Thank you.” —Julie F., Appleton, WI. A. Dear Julie, Though there is a great deal of debate regarding the blood type diets, many people appear to have a very positive effect from following these guidelines. While the jury is still out regarding any scientific rationale or clinical studies to support the validity, some people feel better when using blood type diets. My personal diet change suggestions for increased health and longevity are to select a diet that has generous amounts of animal protein but only 10% carbohydrates. Select your foods based on the Glycemic Index and consume foods that are 50 or lower on the Index, and do not exceed 72 grams of carbohydrates per day. You can have meat of any kind, fish, eggs, butter, cream and the only oils to use are olive and coconut oil. I find this diet to be very effective for any health concern. Good luck to you!