"I am not qualified to talk about the diet. Simply because I am not a dietician"

Mark Spitz is highlighting the significance of having a skilled viewpoint when it concerns going over diet. He is stating that he is not qualified to discuss diet plan due to the fact that he is not a dietician. This is a pointer that it is very important to speak with a professional when it concerns making choices about diet and nutrition. It is also a reminder that it is very important to be knowledgeable about one's own qualifications and limitations when it comes to talking about topics that require specialized understanding. By stressing his absence of credentials, Mark Spitz is stressing the value of looking for expert advice when it concerns diet and nutrition.