How Protein Supports Strong Bones (And How Much You Need Daily)
Last Updated: January 17, 2026
Protein Is a Key Nutrient for Bone and Muscle Health
Your bones are living tissue that constantly rebuild themselves throughout your life. Just as protein helps build muscle, it also plays a crucial role in building and maintaining strong bones. Many people worry that eating too much protein might harm their bones, but current research tells a different story.
The Good News About Protein and Bones
Scientific studies have found that getting enough protein in your diet is important for bone health, especially as you age. Research shows that higher protein intake may help protect your bones in several ways:[1][2][3]
Slows down bone loss that naturally occurs with aging
May reduce the risk of hip fractures by up to 16%
Helps maintain bone density, particularly in the spine
Supports faster recovery after a hip fracture
For older adults with osteoporosis, eating more protein than the standard recommendation appears to be beneficial, not harmful.[1]
How Much Protein Do You Need?
The current recommended dietary allowance (RDA) for protein is 0.8 grams per kilogram of body weight per day. For a 150-pound person, this equals about 55 grams of protein daily. However, research suggests that older adults and people with osteoporosis may benefit from eating more than this amount.[1][4]
Studies have found that protein intakes ranging from 0.8 to 1.2 grams per kilogram of body weight per day are safe and may help protect bone health.[4] This is especially important when combined with adequate calcium intake.
What About the "Protein Leaches Calcium" Myth?
You may have heard that high-protein diets create acid in your body that pulls calcium from your bones. Current research does not support this concern. Multiple studies have found no evidence that the acid produced from dietary protein harms bone health.[1][2] In fact, for older adults, not getting enough protein may be a bigger problem than eating too much.
Animal vs. Plant Protein: Does It Matter?
Both animal and plant proteins appear to support bone health equally well. Studies comparing different protein sources found no significant differences between animal proteins (like meat, fish, eggs, and dairy) and plant proteins (like beans, lentils, nuts, and soy) in their effects on bone density or fracture risk.[3]
The Importance of Calcium Too
Protein works best for your bones when you're also getting enough calcium. Research shows that the bone-protective effects of protein are most evident when calcium intake is adequate.[1] Good calcium sources include dairy products, fortified plant milks, leafy greens, and calcium supplements if recommended by your doctor.
Special Considerations for Older Adults
If you're over 65 or have been diagnosed with osteoporosis, adequate protein intake becomes even more important. Studies in older adults with hip fractures found that adding just 20 grams of protein per day (about the amount in 3 ounces of chicken or a cup of Greek yogurt) helped reduce bone loss and shortened recovery time.[4]
Many older adults don't eat enough protein due to decreased appetite, dental problems, or concerns about cost. If you're struggling to get enough protein, talk with your healthcare provider about strategies to increase your intake.
Practical Tips for Getting Enough Protein
Include a protein source at each meal (eggs at breakfast, beans in your salad at lunch, fish or chicken at dinner)
Snack on protein-rich foods like Greek yogurt, nuts, or cheese
Add protein powder to smoothies if you have trouble eating enough solid food
Choose protein-rich whole foods over processed options when possible
The Bottom Line
Adequate protein intake is essential for maintaining strong bones throughout your life. Rather than worrying about eating too much protein, most people should focus on making sure they're getting enough. Combined with adequate calcium, vitamin D, and weight-bearing exercise, protein is an important part of a bone-healthy lifestyle.
If you have osteoporosis or are at risk for bone loss, talk with your healthcare provider about whether you're getting enough protein in your diet. They can help you develop a nutrition plan tailored to your individual needs.
References
Rizzoli R, Biver E, Bonjour JP, et al. Benefits and Safety of Dietary Protein for Bone Health — an Expert Consensus Paper Endorsed by the European Society for Clinical and Economical Aspects of Osteoporosis, Osteoarthritis, and Musculoskeletal Diseases and by the International Osteoporosis Foundation. Osteoporosis International. 2018;29(9):1933–1948.
Shams-White MM, Chung M, Du M, et al. Dietary Protein and Bone Health: A Systematic Review and Meta-Analysis From the National Osteoporosis Foundation. The American Journal of Clinical Nutrition. 2017;105(6):1528–1543.
Wallace TC, Frankenfeld CL. Dietary Protein Intake Above the Current RDA and Bone Health: A Systematic Review and Meta-Analysis. Journal of the American College of Nutrition. 2017;36(6):481–496.
Rizzoli R, Biver E, Brennan-Speranza TC. Nutritional Intake and Bone Health. The Lancet Diabetes & Endocrinology. 2021;9(9):606–621.