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Home > Anti-aging Research > l-tryptophan

L-Tryptophan

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News & Research:

Abstracts:

  • Dietary intake of tryptophan tied emotion-related impulsivity in humans - Int J Vitam Nutr Res. 2019 Oct 4:1-8 - "Three Factor Impulsivity Index, TFI ... Correlational analyses indicated that higher tryptophan intake was associated with significantly lower scores on two out of three subscales of the TFI, Pervasive Influence of Feelings scores r = -.502, p < .010, and (lack-of) Follow-Through scores, r = -.407, p < .050. ... Findings provide further evidence that emotion-related impulsivity is correlated to serotonergic indices, even when considering only food habits. It also suggests the need for more research on whether tryptophan supplements might be beneficial for impulsive persons suffering from a psychological disorder" - See tryptophan at Amazon.com.
  • Low serum tryptophan predicts higher mortality in cardiovascular disease - Eur J Clin Invest. 2015 Jan 13 - "After adjustments for cardiovascular risk factors and other possible confounders, the hazard ratio (with 95% CI) in the first tryptophan quartile of the study population was 1.51 (1.19-1.90; p=0.0006) for total mortality, 1.41 (1.05-1.89; p=0.0224) for cardiovascular and 1.79 (1.20-2.67; p=0.0042) for non-cardiovascular mortality, respectively, thus indicating a significantly higher risk of death in patients with tryptophan concentrations <34 ╬╝mol/L ... Low serum tryptophan in CAD patients is associated with immune activation and indicates reduced life expectancy"