Eating 200 grams of herring twice a week prevents joint pain. The reason: the unsaturated fatty acids in the herring have an anti-inflammatory effect on the joints. Rheumatism patients in particular should eat herring at least twice a week to relieve their symptoms. However, the herring should be fresh and not preserved, because Bismarck herring or Rollmops it contains too much salt, which, in larger quantities, increases the risk of high blood pressure and thus also heart and circulatory diseases.