Google requires health-related apps — symptom checkers, treatment trackers, wellness apps — to avoid claims that could cause real-world harm if wrong, such as guaranteeing a cure or discouraging users from seeking professional care.
A frequent cause is a wellness or supplement app claiming to treat, cure, or prevent a specific disease without any clinical backing, which Google's health content review flags regardless of app category.
"Your app makes health claims that are not supported by generally accepted scientific or medical consensus, in violation of the Health Content and Services policy."