2. People who can't eat natto:
(1) People with severe stomach problems can't eat natto, which has high purine content and can promote gastric juice secretion, so patients with peptic ulcer gastritis and chronic superficial gastritis had better not eat natto.
(2) Nephropathy patients can't eat natto, which contains high non-essential amino acids, which is unfavorable for nephritis, renal failure and renal dialysis patients, so they can't eat it.
(3) People with gout can't eat it. Natto contains more purines because of metabolic disorder, and gout patients should try not to eat it.
(4) Patients with acute pancreatitis cannot eat it. It is forbidden to eat all foods that can stimulate the secretion of gastric juice and pancreas during the attack of acute pancreatitis, so it is not suitable to eat.
(5) People with unhealed wounds can't eat it. Nattokinase has a strong anticoagulant effect, and patients with postoperative wound disunion can easily cause wound bleeding. Therefore, these five types of people are not recommended to eat natto.