FINALLY, someone has addressed this very important issue in a publication:
Life-Threatening Malnutrition in Very Severe ME/CFS (Baxter, Speight, and Weir, 2021)
by Helen Baxter, Nigel Speight, and William Weir
https://www.mdpi.com/2227-9032/9/4/459/htm
Excerpt:
(spacing added for readability)...