I just updated the High ALA Sources of VeganHealth.org with the following info from a study in the September issue of the European Journal of Clinical Nutrition:
“There is some evidence that people 45 and older do not absorb the oil from ground flaxseeds as well as from flaxseed oil.2 The one study indicating this was only for four weeks and using 6 g of ALA per day. With smaller amounts and for longer periods, the difference might be negligible, but that hasn’t been tested.”
What does this mean? If you are age 45 or older, you might want to get your ALA from flaxseed oil, rather than ground flaxseed. Or you might want to wait until more research determines whether this study is applicable to a more typical situation of eating less ALA but on a more consistent basis.
2. Patenaude A, Rodriguez-Leyva D, Edel AL, Dibrov E, Dupasquier CM, Austria JA, Richard MN, Chahine MN, Malcolmson LJ, Pierce GN. Bioavailability of alpha-linolenic acid from flaxseed diets as a function of the age of the subject. Eur J Clin Nutr. 2009 Sep;63(9):1123-9.