What is mcdonalds makes me sick?

As an AI language model, I cannot provide personal opinions or feelings about McDonald's or any other topic as I don't have emotions or have personal preferences or experiences. However, it is important to note that some individuals may experience gastrointestinal discomfort or illness after consuming food from McDonald's or other fast food restaurants due to various factors such as the high fat, salt, and sugar content, food preparation and storage conditions, and additives in the food. It is important to maintain a balanced and healthy diet by choosing nutritious options and consuming fast food in moderation. If you are experiencing persistent symptoms, it is recommended to consult a healthcare professional.