Phytic acid in nuts

Do nuts have high levels of phytic acid / phytates? Should we care?

Nuts and seeds as a class tend to be high in phytates which reduce your ability to absorb the minerals in the mineral-rich nuts and seeds. The only exception I have seen is chestnuts. From a 1987 review article by Harland and Oberleas, I list the phytic acid content of almonds and an assortment of other nuts and seeds below.

Almonds 1,280 mg/100 gram

Cashews 1,866 mg/100 gram

Chestnuts 47 mg/100 gram

Hazelnuts 1,620 mg/100 gram

Peanuts, toasted 933 mg/100 gram

Jif peanut butter 1,252 mg/100 gram

Black walnuts 1,977 mg/100 gram

English walnuts 760 mg/100 gram

For comparison, here is the phytic acid content of a few other foods:

Heinz ketchup 7 mg/100 gram

Chow mein noodles 409 mg/100 gram

Elbow macaroni 260 mg/100 gram

Okra 5 mg/100 gram

Reducing phytic acid in nuts and seeds is tricky. Soaking nuts is recommended by Sally Fallon in Nourishing Traditions. The problem is that a nut has a small surface area. Soaking a ground food is more effective than soaking a whole nut or kernel. It would be better to grind the nut at least slightly before soaking it. I realize that you then have nuts pieces which are not always near as interesting as the whole nut. Nonetheless, this is a morsel of advice I offer in the Phytic Acid White Paper which you can purchase here.

Read more

Soaking grains @ the Rebuild blog

Soaking beans @ the Rebuild blog

Grains and phytic acid

Oats and phytic acid @ the Rebuild blog

Soy and phytic acid @ the Rebuild blog

More posts like this one:

  1. Grains and phytic acid: Soak, sprout, ferment?
  2. Do marcona almonds have phytic acid?
  3. Almonds and phytic acid / phytates

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