Malainey et al. find a possible explanation in late-eighteenth and early-nineteenth century accounts from three frontiersmen who had adapted to lean-meat diets during extended periods in the plains.

马莱内等人在18世纪末和19世纪初的三个前沿地区发现了一个可能的解释，这些前沿国家在平原上长期适应了瘦肉饮食。