Yes, salt is low histamine. Most people with histamine issues report no issues with pure sea salts, but some have had issues with flavored salts, so when first starting on a low histamine diet, it’s recommended that you stick with sea salts. Follow your body’s desires when it comes to salting while cooking, but overdoing it may be detrimental, so use enough salt to enhance other flavors but not enough that your food actually tastes salty.