Frank Tufano Doesn't Know D

Frank Tufano has claimed that cholesterol is essential for vitamin D transport in the human body. Are these claims true and does this mean vegans are unable to get the nutrition they need?

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Frank's video: https://www.youtube.com/watch?v=_zPNDNUrs60&t=

Research referenced:
Vitamin D transport:
https://www.nature.com/articles/pr198039
Prevalence of vitamin D deficiency:
https://www.ncbi.nlm.nih.gov/pubmed/21310306
Dietary and serum lipids and hormone concentrations:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2374537/
Dietary fat and vitamin D-3 absorption:
https://www.ncbi.nlm.nih.gov/pubmed/25441954
Saturated fat has greater effect on serum cholesterol than dietary cholesterol:
https://www.ncbi.nlm.nih.gov/pubmed/9006469

Видео Frank Tufano Doesn't Know D канала Vegan Gains