Interesting.
I found this book review. https://www.womensinternational.com/blog/calcium-lie-robert-thompson-kathleen-barnes/
Book Review - The Calcium Lie - Women's International Pharmacy
The trouble with supplementing only calcium leads to relative deficiencies in the other minerals needed for healthy bones.
https://www.womensinternational.com/blog/calcium-lie-robert-thompson-kathleen-barnes/