Ketchup is evaluated in dietary guidelines for 48 conditions. It is considered unproblematic for 16, suitable with restrictions for 18, and not recommended for 14 conditions.
Ketchup is not recommended with Acid Reflux. tomato acid and sugar irritate esophagus
Ketchup is only conditionally suitable with Arteriosclerosis. high glycemic index or unfavorable composition
Ketchup is only conditionally suitable with Calcium Deficiency. high in table salt
Ketchup is allowed and generally well-tolerated with Celiac Disease. often gluten-free, check additives
Ketchup is only conditionally suitable with Crohn's Disease. high in sugar, often with additives, can worsen bloating
Orientation guide – not a substitute for medical advice.