6. A food composition comprising an omega 6-type omega 3 unsaturated fatty acid balance controlling agent comprising a dioxabicyclo [3.3.0] octane derivative of formula (I) as an active ingredient.;In the above formula (I), ROne, R2, R3, R4, R5And R6Each independently represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or ROneAnd R2And / or R4And R5Are a methylene group or an ethylene group, and n, m and 1 represent 0 or 1.
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