Editing Vegetarianism (section)

===Fatty acids===
Plant-based, or vegetarian, sources of [[Omega 3]] fatty acids include [[soy]], [[walnut]]s, pumpkin seeds, [[canola oil]], [[kiwifruit]], [[hempseed]], [[algae]], [[chia seed]], [[flaxseed]], echium seed and [[Leaf vegetable|leafy vegetables]] such as lettuce, [[spinach]], [[cabbage]] and [[portulaca oleracea|purslane]]. Purslane contains more Omega 3 than any other known leafy green. [[Olive]]s (and [[olive oil]]) are another important plant source of unsaturated fatty acids. Plant foods can provide [[alpha-linolenic acid]] which the human body uses to synthesize the long-chain n-3 fatty acids [[Eicosapentaenoic acid|EPA]] and [[Docosahexaenoic acid|DHA]]. EPA and DHA can be obtained directly in high amounts from oily fish, fish oil, or algae oil. Vegetarians, and particularly vegans, have lower levels of EPA and DHA than meat-eaters. While the health effects of low levels of EPA and DHA are unknown, it is unlikely that supplementation with alpha-linolenic acid will significantly increase levels.<ref>{{cite journal |vauthors=Rosell MS, Lloyd-Wright Z, Appleby PN, Sanders TA, Allen NE, Key TJ | title = Long-chain n-3 polyunsaturated fatty acids in plasma in British meat-eating, vegetarian, and vegan men | journal = Am J Clin Nutr | volume = 82 | issue = 2 | pages = 327–34 | year = 2003 | pmid = 16087975 | doi = 10.1093/ajcn.82.2.327 | doi-access = free }}</ref>{{Clarify|date=May 2011}}. Significantly, for vegetarians, certain [[algae]] such as [[spirulina (dietary supplement)|spirulina]] are good sources of [[gamma-linolenic acid]] (GLA), [[alpha-linolenic acid]] (ALA), [[linoleic acid]] (LA), [[stearidonic acid]] (SDA), [[eicosapentaenoic acid]] (EPA), [[docosahexaenoic acid]] (DHA), and [[arachidonic acid]] (AA).<ref name="uzbek">{{cite journal |author1=Babadzhanov A |author2=Abdusamatova N |author3=Yusupova F |author4=Faizullaeva N |author5=Mezhlumyan LG |author6=Malikova MKh | title = Chemical Composition of Spirulina platensis Cultivated in Uzbekistan | journal = Chemistry of Natural Compounds | volume = 40 | issue = 3 | pages = 276–279 | year = 2004 | doi = 10.1023/B:CONC.0000039141.98247.e8|bibcode=2004CNatC..40..276B |s2cid=23130198 }}</ref><ref name="biomass">{{cite journal |vauthors=Tokuşoglu Ö, Uunal MK | title = Biomass Nutrient Profiles of Three Microalgae: Spirulina platensis, Chlorella vulgaris, and Isochrisis galena | journal=Journal of Food Science | volume = 68 | issue = 4 | pages = 1144–1148 | year = 2003 | doi = 10.1111/j.1365-2621.2003.tb09615.x }}</ref>