Tryptophan News and Research

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Tryptophan is one of the 20 standard amino acids, as well as an essential amino acid in the human diet.

Longer breastfeeding links to fewer ADHD symptoms in children

Longer durations of full breastfeeding are linked to fewer ADHD symptoms in children, suggesting early feeding patterns may influence neurodevelopment.

23 Jun 2026

Urine-based autism screening using gut microbial metabolites

Elevated gut microbe metabolites may distinguish children with autism, paving the way for a non-invasive urine test and a new ASD subtype linked to microbiome.

29 May 2026

Urine test may help identify autism risk in children

A simple urine test may help identify children at risk for autism sooner than current assessments - opening the door for earlier diagnosis and treatment, and better long-term outcomes for children who do have autism spectrum disorder.

26 May 2026

Aerobic exercise mitigates nanoplastic damage in female zebrafish

Using female zebrafish as a model, researchers have found that aerobic exercise may influence various connections in the body to lessen the damaging health impacts of environmental nanoplastics.

20 May 2026

Metabolic rewiring could help CAR-T cells fight solid tumors

This review explains how glucose scarcity, lipid disruption, amino acid deprivation, and toxic metabolites weaken CAR-T cells inside solid tumors. It highlights metabolic reprogramming as a promising strategy to improve CAR-T cell persistence, adaptability, and anti-tumor function.

29 Apr 2026

New imager separates UV and infrared light to find cancerous nodes

Researchers have developed a compact camera that captures ultraviolet, near-infrared and visible images using a single chip. Inspired by the multiwavelength vision capability of the mantis shrimp, the camera could help surgeons identify lymph nodes connected to a tumor and assess whether cancer has spread to them, making cancer surgery safer and less invasive.

17 Apr 2026

How next-generation proteomics is decoding the language of life

This review examines how next-generation protein sequencing and analysis technologies are expanding proteomics beyond the limits of mass spectrometry, especially for detecting proteoforms and analyzing proteins at single-molecule resolution. It highlights maturing fluorescence-based and nanopore-based platforms that could complement existing methods and deepen insight into protein sequence, structure, function, and modification states.

13 Apr 2026

Gut-derived metabolites regulate immune cells in complex ways

Published on March 23, 2026, in Volume 2, article number 18 of the journal Immunity & Inflammation, the review begins by systematically outlining the sources and synthetic pathways of immune-relevant microbial metabolites, including bile acids, short-chain fatty acids, amino acid derivatives, vitamins, trimethylamine/trimethylamine N-oxide, and odd-chain fatty acids.

31 Mar 2026

Microbial ecosystems influence success of cancer checkpoint immunotherapy

Immune checkpoint inhibitors targeting PD-1 and PD-L1 have revolutionized cancer therapy, delivering long-term survival benefits in several malignancies.

9 Mar 2026

Researchers propose that Parkinson’s disease may start in the gut, not the brain

A perspective in The Journal of Clinical Investigation argues that environmental exposures may interact with the gut microbiome and intestinal barrier to trigger biological processes linked to Parkinson’s disease. The authors propose that cumulative environmental stressors can erode host resilience, promoting α-synuclein pathology, immune activation, and neurodegeneration.

5 Mar 2026

Periodontal bacteria trigger bone density reduction via the gut

Periodontitis, a chronic inflammatory disease of the gums, affects hundreds of millions of people worldwide and is increasingly linked to systemic disorders beyond the oral cavity.

4 Mar 2026

Living in deprived neighborhoods reshapes the gut microbiome

This study reveals links between socioeconomic deprivation and gut microbiome changes, highlighting potential pathways to mental and metabolic health issues.

2 Mar 2026

Chemotherapy-induced gut changes trigger anti-metastatic immune response

Chemotherapy commonly damages the intestinal lining, a well-known side effect. But this injury does not remain confined to the gut.

22 Jan 2026

Adding lean pork to a plant-forward diet supports healthy aging biomarkers

A randomized crossover feeding trial in adults aged 65 years or older found that plant-forward diets incorporating either minimally processed lean pork or lentils produced similar short-term improvements in cardiometabolic and neuroactive biomarkers. Both diets supported metabolic health and functional stability, with no overall adverse biomarker effects attributable to including minimally processed red meat within a Dietary Guidelines–aligned pattern.

19 Jan 2026