Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Animal protein has been investigated in relation to osteoporosis primarily because of its role in overall bone health. Protein is essential for bone matrix formation and maintenance, and some studies suggest that adequate protein intake—including animal protein—may help preserve bone mineral density (BMD), especially in older adults. Traditionally, there was concern that high animal protein intake could increase calcium excretion and thus harm bones, but recent research indicates that when calcium intake is adequate, higher protein intake (including from animal sources) may actually benefit bone health and reduce fracture risk.

However, the evidence is mixed. Some observational studies and meta-analyses show a modest benefit of higher protein (including animal protein) intake on BMD and reduction in hip fracture risk, particularly in populations with adequate calcium and vitamin D intake. Other studies find little to no effect, and some suggest potential harm if protein intake is high but calcium intake is low. No major guidelines recommend animal protein as a primary intervention for osteoporosis; rather, they emphasize overall adequate protein intake along with calcium and vitamin D.

In summary, there is some scientific evidence supporting the role of adequate animal protein intake in maintaining bone health and potentially reducing osteoporosis risk, but it is not strong or specific enough to rate above a 2. Animal protein is not used as a standalone treatment for osteoporosis, but rather as part of a balanced diet supporting overall bone health.

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