Prehistoric Pacific Coast diets had salmon limits

Humans cannot live on protein alone - even for the ancient indigenous people of the Pacific Northwest whose diet was once thought to be almost all salmon. Anthropologists argue such a protein-heavy diet would be unsustainable and document the many dietary solutions ancient Pacific Coast people in North America likely employed to avoid 'salmon starvation,' a toxic and potentially fatal condition brought on by eating too much lean protein.

from Top Health News -- ScienceDaily https://ift.tt/3dUtrQ9