“Low calcium intake, which is often considered as a potential disadvantage of the Paleolithic diet model, should be weighed against the low content of phytates and the low content of sodium chloride, as well as the high amount of net base yielding vegetables and fruits.”
PS: Low calcium consumption is thought to predispose to osteoporosis, a bone-thinning disease that causes fractures. It affects women far more than men. If you don’t live past 50 or 60, it’s not much of a problem. Kowalski and Bujko imply that low phytate and sodium content, plus alkaline veggies and fruit, counteract any adverse bone effects of low calcium consumption. I’m not sure because I don’t read Polish. Loren Cordain’s paleo diet website talks about the diet being healthy for bones, citing the acid-base issue.
h/t Amy Kubal (Twitter: @AmykRd)