Weight Loss Evidence

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Koliko proteina za mršavljenje?

Protein je makronutrijent s najjasnijim slučajem u mršavljenju, a razlozi su zanimljiviji od "drži vas sitim".

Ažurirano 3 min čitanja 28 citati Snaga dokaza 4/5

Proizvodne tezge pod željeznim krovom Borough Market-a na Bedale Street-u, London
Txllxt TxllxT · CC BY-SA 4.0 · Wikimedia Commons

Zašto protein zaslužuje svoju reputaciju

Tri odvojena mehanizma, što je neobično za tvrdnju o ishrani. Protein ima najviši termički efekat među makronutrijentima, tako da se skromni deo njegove energije troši na varenje. On je najviše zasitan po kaloriji, uz sistematsku podršku za njegov efekat na osjećaje apetita kod osoba s prekomjernom težinom [2]. I on je supstrat za očuvanje mišićne mase u energetskom deficitu, što je važno jer mišićna masa opada sa svakim značajnim mršavljenjem.

Protein i sitost

Hipoteza o proteinu

Ovo je najzanimljivija ideja u ovoj oblasti. Hipoteza tvrdi da ljudi reguliraju unos proteina strože nego ukupnu energiju — da nastavljamo jesti dok ne postignemo cilj unosa proteina [4]. Ako je to tačno, dijeta razrijeđena proteinima prisiljava na prekomjernu konzumaciju svega ostalog kako bi se postigao isti apsolutni unos proteina.

To bi lijepo objasnilo deo asocijacije s ultra-prerađenom hranom, budući da te dijete obično imaju razrijeđene proteine — vidi ultra-prerađena hrana. Hipoteza ima podršku i nije univerzalno prihvaćena; tretirajte je kao obećavajući okvir, a ne kao uspostavljeni mehanizam.

Koliko

Grubi ciljevi iz literature intervencija
SituacijaProtein po kg tjelesne težine dnevnoNapomena
Opšte zdravlje, bez deficita0.8 g (RDA)Minimalno da se spreči nedostatak, ne optimum
Mršavljenje, sjedilački način života1.2-1.6 gZa sitost i očuvanje mišićne mase
Mršavljenje uz trening snage1.6-2.0 gGornja granica tokom agresivnih deficita
Stariji odrasli1.2-1.5 gAnabolička otpornost povećava potrebe
Na lijekovima koji suzbijaju apetit1.2-1.6 gNajteže postići; zahtijeva planiranje

Za osobe s značajnom prekomjernom težinom, izračunavanje na osnovu cilja umjesto trenutne tjelesne težine izbjegava naduvane brojeve.

Izvor: da li je bitno?

Manje nego što argumenti sugeriraju. Randomizovana studija iz 2025. je pokazala slične efekte između proteina životinjskog i biljnog porekla [5], što je u skladu s širim slikom da ukupni unos i sadržaj leucina više znače od porekla. Biljni izvori imaju niži leucin i nižu probavljivost, pa su nešto viši ukupni brojevi razumni — ne drugačija strategija.

Dodatak proteina sirutke je meta-analiziran kod postmenopauzalnih žena [1], a randomizovana crossover intervencija načina života pruža dodatne podatke iz studija [6].

Razmatranje kostiju

Mršavljenje smanjuje gustinu mineralne kosti — mehaničko opterećenje plus smanjen unos nutrijenata relevantnih za kosti. Meta-analiza je ispitivala efekat količine dijetalnog proteina na kosti nakon mršavljenja [3] i otkrila da je viši unos proteina povoljan. Ovo preokreće staru tvrdnju da visoki proteini štete kostima kroz kiselinsko opterećenje, koja nije izdržala ispitivanje.

Česta pitanja

Da li mogu jesti previše proteina?
Praktično, ograničenja su apetit i istiskivanje druge hrane iz ishrane. Ne postoji utvrđen prag štetnosti kod osoba sa normalnom funkcijom bubrega.
Da li mi je potreban protein uz svaki obrok?
Raspodjela skromno pomaže sintezi mišićnih proteina. Ukupni dnevni unos je važniji.
Da li je biljni protein lošiji?
Ispitivanje iz 2025. godine pronašlo je slične efekte [5]. Nešto veće ukupne količine nadoknađuju niži sadržaj leucina i probavljivost.
Da li mi je potreban suplement?
Samo ako hranom ne možete postići cilj. Postaje istinski koristan kada je apetit potisnut lijekovima ili skraćenim vremenskim okvirom za jelo.
Repa, peršun, šargarepa i cvekla prikazani zajedno na tržnici
Korjenasto povrće se dobro čuva, zbog čega dominira zimskom prehranom sjeverne Evrope. Beatrice Murch · CC BY-SA 2.0 · Wikimedia Commons

Povezano čitanje

Dokazi iza ove stranice Stogasti grafikon koji prikazuje sastav 14 publikacija navedenih na ovoj stranici prema tipu studije. 484meta-analysis (4)randomised trial (8)review (4)
16 publikacija, 2006–2025. To je mješavina koja uključuje i ispitivanja i sinteze, što je pozicija iz koje je tvrdnja o uzroku razumna. Izvor: vlastita lista citata ove stranice, ispod.

Reference

Svaka citacija u nastavku povezuje na izvorni recenzirani zapis na PubMed-u ili putem DOI-a. Ništa ovdje nije zamjena za medicinski savjet.

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  2. Effect of Whey Protein Supplementation in Postmenopausal Women: A Systematic Review and Meta-Analysis Kuo YY, Chang HY, Huang YC, et al. · Nutrients · 2022 · Meta-analysis DOIPubMed 36235862Full text
  3. Are Dietary Proteins the Key to Successful Body Weight Management? A Systematic Review and Meta-Analysis of Studies Assessing Body Weight Outcomes after Interventions with Increased Dietary Protein Hansen TT, Astrup A, Sjödin A · Nutrients · 2021 · Meta-analysis DOIPubMed 34579069Full text
  4. Dietary protein and appetite sensations in individuals with overweight and obesity: a systematic review de Carvalho KMB, Pizato N, Botelho PB, et al. · European journal of nutrition · 2020 · Systematic review DOIPubMed 32648023
  5. Effects of Dietary Protein Quantity on Bone Quantity following Weight Loss: A Systematic Review and Meta-analysis Wright CS, Li J, Campbell WW · Advances in nutrition (Bethesda, Md.) · 2019 · Meta-analysis DOIPubMed 31301138Full text
  6. Protein leverage and energy intake Gosby AK, Conigrave AD, Raubenheimer D, et al. · Obesity reviews : an official journal of the International Association for the Study of Obesity · 2014 · Meta-analysis DOIPubMed 24588967
  7. Dietary Protein Reduction During Isocaloric Conditions Reduces Body Weight in Men With Overweight or Obesity Lyster AE, Frederiksen AS, Jensen JK, et al. · Obesity (Silver Spring, Md.) · 2026 · Randomised controlled trial DOIPubMed 42299884Full text
  8. Long-term effects of dietary protein and carbohydrate quality on prediabetes remission: results from the PREVIEW randomised multinational diabetes prevention trial Zhu R, Guo J, Huttunen-Lenz M, et al. · Diabetologia · 2026 · Randomised controlled trial DOIPubMed 41094026Full text
  9. Effect of a Defined Intake of a Soy-Based Protein-Rich Supplement on Body Composition and Eating Behaviour in Overweight Women: A Secondary Analysis of the ACOORH Trial Berg A, Stensitzky-Thielemanns A, Predel HG · Nutrients · 2026 · Randomised controlled trial DOIPubMed 42738981Full text
  10. Impact of resistance training on inflammatory biomarkers and associations with treatment outcomes in colon cancer Lee S, Ma C, Caan BJ, et al. · Cancer · 2025 · Randomised controlled trial DOIPubMed 40278841Full text
  11. The effects of dietary protein on physical performance and body composition in middle age and older people having type II diabetes mellitus: a randomized pilot study Argyropoulou D, Nomikos T, Terzis G, et al. · European journal of nutrition · 2025 · Randomised controlled trial DOIPubMed 39751920
  12. Postprandial plasma amino acid and appetite responses to a low protein breakfast supplemented with whey or pea protein in middle-to-older aged adults Korzepa M, Marshall RN, Rogers LM, et al. · European journal of nutrition · 2025 · Randomised controlled trial DOIPubMed 39932545Full text
  13. Acute Effects of Oral Microbial Protease Co-ingestion with Whey Protein on Postprandial Plasma Amino Acid Concentrations, Appetite, and Satiety in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled, Crossover Clinical Trial Huang Y, Bell ZW, Alhamwi A, et al. · The Journal of nutrition · 2025 · Randomised controlled trial DOIPubMed 40675336Full text
  14. Similar effects between animal-based and plant-based protein blend as complementary dietary protein on muscle adaptations to resistance training: findings from a randomized clinical trial Santini MH, Erwig Leitão A, Mazzolani BC, et al. · Journal of the International Society of Sports Nutrition · 2025 · Randomised controlled trial DOIPubMed 41059835Full text
  15. A Randomized Controlled Crossover Lifestyle Intervention to Improve Metabolic and Mental Health in Female Healthcare Night-Shift Workers Robinson LA, Lennon S, Pegel AR, et al. · Nutrients · 2025 · Randomised controlled trial DOIPubMed 41228416Full text
  16. Effect of unsaturated fat and protein intake on liver fat in people at risk of unhealthy aging: 1-year results of a randomized controlled trial Wernicke C, Pohrt A, Pletsch-Borba L, et al. · The American journal of clinical nutrition · 2023 · Randomised controlled trial DOIPubMed 36804020
  17. High protein diet promotes body weight loss among Brazilian postpartum women de Castro MBT, Cunha DB, Araujo MC, et al. · Maternal & child nutrition · 2019 · Randomised controlled trial DOIPubMed 30381901Full text
  18. Higher compared with lower dietary protein during an energy deficit combined with intense exercise promotes greater lean mass gain and fat mass loss: a randomized trial Longland TM, Oikawa SY, Mitchell CJ, et al. · The American journal of clinical nutrition · 2016 · Randomised controlled trial DOIPubMed 26817506
  19. A candidate gene approach for identifying differential iron responses in young overweight women to an energy-restricted haem iron-rich diet Cheng HL, Hancock DP, Rooney KB, et al. · European journal of clinical nutrition · 2014 · Randomised controlled trial DOIPubMed 24801367
  20. Effects of high-protein diets on fat-free mass and muscle protein synthesis following weight loss: a randomized controlled trial Pasiakos SM, Cao JJ, Margolis LM, et al. · FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2013 · Randomised controlled trial DOIPubMed 23739654
  21. The Diabetes Excess Weight Loss (DEWL) Trial: a randomised controlled trial of high-protein versus high-carbohydrate diets over 2 years in type 2 diabetes Krebs JD, Elley CR, Parry-Strong A, et al. · Diabetologia · 2012 · Randomised controlled trial DOIPubMed 22286528
  22. Effects of different dietary protein intakes on body composition and vascular reactivity Ferrara LA, Innelli P, Palmieri V, et al. · European journal of clinical nutrition · 2006 · Randomised controlled trial DOIPubMed 16340944
  23. Variations in postprandial ghrelin status following ingestion of high-carbohydrate, high-fat, and high-protein meals in males Tannous dit El Khoury D, Obeid O, Azar ST, et al. · Annals of nutrition & metabolism · 2006 · Randomised controlled trial DOIPubMed 16508254
  24. High-Protein Plant-Based Diet Versus a Protein-Matched Omnivorous Diet to Support Resistance Training Adaptations: A Comparison Between Habitual Vegans and Omnivores Hevia-Larraín V, Gualano B, Longobardi I, et al. · Sports medicine (Auckland, N.Z.) · 2021 · Clinical trial DOIPubMed 33599941
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