Is a high protein diet really needed?

[spadekevin]

Hi,

Is it really needed or optimal muscle growth?
Has any one got ant scientific knowledge to back it up?
Not denying the claim just i have been reading Patrick Holdfords Optimal Nutrition book which i highly reccomend. But he claims with a wealth of scientific studies to back it up; that a diet high in protein will result in rapid calcium loss which will increase the risk of osteoporosis, and will result in weak bones that are easy fractured in later life, arthritis etc. Also has anyone seen good results on a moderate protein diet?

Please help.

I didn't find the right solution from the Internet.

References:-
https://forum.bodybuilding.com/showthre ... =113913051
Telematics System Video

Thanks!