Posts Tagged ‘Protein-restriction’

Calorie-restriction, Protein-restriction and free-IGF-1 / SHBG

Monday, November 22nd, 2010

Studies pertaining to Calorie-restriction (CR), Protein-restriction (PR) and free-IGF-1 and SHBG.

1)

Br J Cancer. 2000 Jul;83(1):95-7.
Hormones and diet: low insulin-like growth factor-I but normal bioavailable androgens in vegan men.

Allen NE, Appleby PN, Davey GK, Key TJ.
Cancer Epidemiology Unit, Imperial Cancer Research Fund, Radcliffe Infirmary, Oxford, UK.

Abstract

Mean serum insulin-like growth factor-I was 9% lower in 233 vegan men than in 226 meat-eaters and 237 vegetarians (P = 0.002).

Vegans had higher testosterone levels than vegetarians and meat-eaters, but this was offset by higher sex hormone binding globulin, and there were no differences between diet groups in free testosterone, androstanediol glucuronide or luteinizing hormone.

PMID: 10883675 [PubMed - indexed for MEDLINE]PMCID: PMC2374537

http://www.ncbi.nlm.nih.gov/pubmed/10883675

Full text PDF: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2374537/pdf/83-6691152a.pdf
PDF file: Hormones and diet-83-6691152a.pdf

2)

Aging Cell. 2008 Oct;7(5):681-7.
Long-term effects of calorie or protein restriction on serum IGF-1 and IGFBP-3 concentration in humans.

Fontana L, Weiss EP, Villareal DT, Klein S, Holloszy JO.

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