I took a few days to review that website because I have studied some of the Weston Price and Pottenger work, and something just did not smell right here.
From what I can tell, that site is a knock off of the original work done by Weston A Price, and not the original Price Pottenger foundation, they are interested in selling their own books, and interested in selling their own agenda of promoting an animal based diet with little to no fruits and vegetables, and little to do with Price's original work.
What they are teaching goes against what most mainstream nutritionists and health science professional are teaching nowadays, eat more fruits n shoots n less animal, protein, fat, and processed products, and this is all based on evidence based research in the fields of nutrition and health science.
The original research done by Weston Price and Pottenger (the Pottenger cat study) discovered that the more raw foods a community ate, the better off they were in health and bone and teeth health, and in the case of Pottenger, even the stool of raw fed animals provided better nutrients for garden plants.
While they are not vegan, to this day, the original Price Pottenger Foundation supports eating a diet high in raw fruits and vegetables and nuts and seeds.
In nutrition, zinc and copper are known as trace minerals. We do not need them in huge amounts, and outside of medical emergencies, supplementation is not needed. Also, it may not be important to hit RDA targets 100% everyday as we store some of the nutrients at least for a short time in cells and tissues.
On a high raw foods diet, many people are pleasantly surprised that they meet their zinc and copper RDAs easily if they do follow sites like cronometer or www.nutritiondata.com.
Now, in nutrition research, it has been found that eating excessive amounts of zinc, especially that found in supplements, actually depletes copper supplies, and while a little zinc is good for immunity, too much zinc decreases immune function.
Eating enough calories from whole raw plant foods such as fruits, lettuce greens, and nuts and seeds will provide the right amount of zinc and copper in its natural form the body can use with little to no side effects.
Some plant foods like grains, cereal based foods, and potatoes are high in phytates and may cause zinc deficiency. Infections can cause deficiency too.
In highly raw people though, who get enough calories and enough vitamin C, may find they have less issues with malnutrition and infection, and zinc supplied by a raw diet is sufficient.
If someone does suspect a zinc deficiency, please confirm with a regular physician. Sometimes, some conditions mimic others in symptoms, so it is not recommended to self diagnose or medicate.
http://ods.od.nih.gov/factsheets/Zinc-Consumer/ Disclaimer, the claim that vegetarians may not get enough zinc may be based on those eating a standard cooked diet high in grains and antinutrients and based on a 2000 calorie diet. Getting enough calories from raw fruits, lettuce greens, and nuts and seeds (with RT4 getting some potatoes from whole plant form) usually provides zinc needs on most days.
Hi PK, can you provide an example 2000 kcal raw low-fat diet that meets the RDA for zinc? Thanks.