As humans, we didn’t adapt to eat grains, we also didn’t adapt to consume dairy and processed sugars. However looking at our diet they are one of the most consumed foods, with fresh vegetables, fruits, nuts, seeds and meat being far less consumed; and these are the foods which we have been evolved to eat and should be eating. Grains are so cheap to make and are sold in bulk to many billions of people and incidentally, the average person worldwide has become fatter and un-healthier since their overrated introduction to society.
Although grains contain protein, carbohydrates and some vitamins and minerals, which will on the outside, make grains seem like a brilliant food source, grains also contain what are called antinutrients, lectins and gluten, all which have negative traits.
Antinutrients are pretty much how the word sounds, ANTI nutrients. The main antinutrient found in grains is called Phytates, which bind to vitamins, minerals and enzymes to make them unavailable to the body. The main minerals Phytates target include calcium, magnesium, iron, copper and zinc, which interestingly are also the main minerals found in grains itself, preventing full absorption of the nutrients present along with taking them out of the body to later cause, with consistent consumption of grains, possible nutrient deficiency in those areas and/or more.
Phytates will also attack enzymes which are needed for digestion and other bodily functions and will assist in inhibiting protein digestion.
Antinutrients are also found in legumes, nuts and seeds, and even eggs contain an antinutrient called avidin; however you’d need to consume a drastically high amount of raw eggs to get enough avidin to start causing negative effects on the body. Nuts and seeds are a food source that are good for us, as they contain good traces of fatty acids and protein, so we don’t want to stop eating them because they contain antinutrients; what we can do to reduce the amount of antinutrients is to soak them in water, this is quite beneficial as this process will not only reduce the antinutrients, but will also improve the nut/seeds digestibility, so we end up getting more of the good stuff! If you don’t have the chance to soak your nuts, just be moderate in the amount that you eat.
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http://livingpaleo.com/articles/avoiding-grains-part-1.html
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