The answer is yes. First of all, although fish is nutritious, patients with thrombocytopenia can't eat fish. Patients with hemorrhagic diseases such as thrombocytopenia, hemophilia and vitamin K deficiency should not eat fish or eat less fish. Because fish contains eicosahexaenoic acid, it can prevent cholesterol from adhering to the blood vessel wall, which is very beneficial to patients with coronary heart disease and atherosclerosis. However, eicosahexaenoic acid can also inhibit platelet aggregation and easily cause capillary bleeding in patients with hemorrhagic diseases, thus aggravating bleeding symptoms. Except for patients with thrombocytopenia, gout patients should avoid eating fish. Aquatic products are rich in purine and other substances, and gout is caused by purine metabolism disorder in human body, so eating fish will aggravate the condition.