RT Journal
A1 Oken E, Belfort MB
T1 FIsh, fish oil, and pregnancy
JF JAMA
JO JAMA
YR 2010
FD October 20
VO 304
IS 15
SP 1717
OP 1718
DO 10.1001/jama.2010.1541
UL http://dx.doi.org/10.1001/jama.2010.1541
AB 
Fish are a rich source of long-chain n-3 (omega-3) polyunsaturated fatty acids (PUFA), essential nutrients that have important structural and physiological roles in several body systems, including neurological, immune, and cardiovascular. Because humans cannot synthesize n-3 PUFA, these nutrients must be consumed in the diet. Conversion from the parent n-3 PUFA, α-linolenic acid, to the more biologically active long-chain n-3 PUFA, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), is inefficient and therefore consumption of some preformed long-chain n-3 PUFA is important for optimal health. In the United States and elsewhere, fish is the main dietary source of DHA and EPA.