Fish protein increases satiety more than beef and chicken protein

Uhe AM, Collier GR, O'Dea K.
A comparison of the effects of beef, chicken and fish protein on
satiety and amino acid profiles in lean male subjects.
J Nutr. 1992 Mar;122(3):467-72.
PMID: 1542005 [PubMed - indexed for MEDLINE]
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1542005&dopt=Citation>

"We compared postprandial satiety and plasma amino acid,
insulin, and glucose concentrations in six lean male subjects
after the ingestion of three types of protein (beef, chicken
and fish). Satiety was greater after the fish meal (P less than
0.01). The observed difference in satiety could be correlated
with two of the putative satiety signals measured in this
study: 1) serotoninergic activity, due to differences observed
in the postprandial tryptophan to large neutral amino acid
ratio; and 2) digestibility, reflected in the significantly (P
less than 0.05) longer time it took for the plasma amino acid
concentrations to peak after the fish meal. Correlations
between dietary and plasma amino acid concentrations were
determined and good correlations (r = 0.90) were observed for
essential amino acids other than lysine and tryptophan. There
were no differences in insulin or glucose concentrations in
subjects after consuming each of the three meals. Whether other
differences that we observed, such as increased concentrations
of taurine and methionine following the fish meal, had any
effect on satiety or were of biological significance is not
known."


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Matti Narkia
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