Animal proteins or Plant proteins ?

Protein intake and bone mineral density (BMD): Cross-sectional relationship and longitudinal effects in older adults

An association between total and animal protein intake with higher BMD was found after 12 and 24 weeks. In contrast, plant protein intake was associated with lower BMD.

Groenendijk, I.; Grootswagers, P.; Santoro, A.; Franceschi, C.; Bazzocchi, A.; Meunier, N.; Caille, A.; Malpuech-Brugere, C.; Bialecka-Debek, A.; Pietruszka, B.; et al. Protein intake and bone mineral density: Cross-sectional relationship and longitudinal effects in older adults. Journal of Cachexia, Sarcopenia and Muscle 2022, n/a, doi:https://doi.org/10.1002/jcsm.13111.