The Study
Controversies surrounding high-protein diet intake: satiating effect and kidney and bone health.
This study is like a big summary of many other studies. It tells us that high-protein diets might be linked to things like feeling full or changes in bones, but it can't prove they cause these things because it's just putting together what others found.
Analysis score
Maximum 5 for a narrative review.
Where the score came from
Eating more protein makes you feel fuller, so you eat less and lose weight. It might not hurt your kidneys if they're healthy, but could be bad if you already have kidney problems.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 51 / 100
Quality score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This is a meaningful amount of weight loss for adults trying to manage their weight.
- 2People eat 441 fewer calories a day and lose 4.9 kg in 12 weeks on high-protein diets.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Advances in nutrition
Year
2015
Authors
M. Cuenca-Sánchez, Diana Navas-Carrillo, E. Orenes-Piñero
Related Content
Claims (6)
Eating a lot of protein might put extra strain on your kidneys, which could be harmful over time.
Eating more protein makes you feel fuller than eating lots of carbs or fats, which can help you eat less and lose weight over time.
Eating lots of protein makes your kidneys work harder in healthy people, but it probably doesn't harm them if your kidneys are already healthy. However, if you have kidney problems, high protein might make them worse.
Eating protein makes your gut release certain hormones that help you feel full faster and eat less food.
Eating lots of protein makes your body absorb more calcium from food and pee out more calcium, but studies show this extra calcium in pee comes from what you eat, not from your bones getting weaker.
Eating lots of protein might boost a growth hormone in your body that helps keep bones strong by building them up and slowing down their breakdown, but this idea mostly comes from studies that show a link rather than proof.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.