1. A method of treating metabolic syndrome in a pediatric subject in need thereof, comprising: (a) detecting in a subject pediatric metabolic syndrome and (b) administering to said subject from about 1 g to about 4 g etileykozapentaenoata in sutki.2. A method according to claim 1, wherein the subject has one or more of the following features:. Excess fat in the abdomen, hypertension, hyperlipidemia and / or giperglikemiya.3. A method according to claim 1, wherein the subject has three or more of the following features: (a) a fasting glucose level of at least 110 mg / dl. (B) the value of the waist circumference of at least the 90th percentile to the age and sex of the subject (C) a triglyceride level of at least 110 mg / dl (D) the level of HDL-C is not more than about 40 mg / dL and (e) blood pressure level of at least the 90th percentile for age, gender and height subekta.4. A method according to claim 1, wherein the subject has three or more of the following features: (a) a fasting glucose level of at least 110 mg / dl. (B) the value of the waist circumference of at least the 75th percentile (C) a triglyceride level of at least 100 mg / dl (D) the level of HDL-C is not more than about 50 mg / dL and (e) the level of blood pressure at least 90 th protsentilya.5. A method according to claim 1, wherein the subject has three or more of the following features:. (A) impaired glucose tolerance, determined by the presence of glucose level two hours after the load of 140 mg / dl to 199 mg / dl in the 75 -grammovogo oral glucose tolerance test (B) the value of the waist circumference of at least the 90th percentile for age, gender and racial subject toiletries (C) a triglyceride level of at least the 90th percentile to the age and sex1. Способ лечения педиатрического метаболического синдрома у нуждающегося в этом субъекта, включающий:(a) обнаружение у субъекта педиатрического метаболического синдрома и(b) введение указанному субъекту от примерно 1 г до примерно 4 г этилэйк