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.

Impulsivity shapes diet and gut bacteria in healthy adults, study finds

Impulsivity in healthy adults is linked to unhealthy dietary choices, such as higher intake of alcohol and sugary drinks and lower fiber consumption. These dietary behaviors, in turn, are associated with changes in specific gut bacterial genera, highlighting an indirect pathway between personality traits and the gut microbiome.

4 Aug 2025

Herbal remedies show promise for treating depression

This scoping review analyzes OTC products for depression, uncovering effective treatments and emphasizing the need for further studies on herbal efficacy.

4 Aug 2025

New blood test detects early-stage solid tumors with high accuracy

Current methods for cancer diagnosis are based on identifying biomarkers - molecules that reveal a particular state or process in the body – produced by the tumor or associated proteins.

31 Jul 2025

Gut microbial metabolites restore hormone-producing cells in obesity

New research from scientists at the Marshall University Joan C. Edwards School of Medicine reveals that certain gut microbial byproducts may hold promise as a novel therapy for obesity-associated metabolic complications by restoring critical hormone-producing cells in the intestine.

29 Jul 2025

Research uncovers ME/CFS's systemic impact for targeted therapies

Millions suffering from myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), a debilitating condition often overlooked due to the lack of diagnostic tools, may be closer to personalized care, according to new research that shows how the disease disrupts interactions between the microbiome, immune system, and metabolism.

26 Jul 2025

Gut pathogens override chemical repulsion and invade

The research redefines indole's function, showing its exploitation by Salmonella for colonization, highlighting complex bacterial interactions in the gut.

17 Jul 2025

New review identifies promising and under-researched OTC depression aids

Most people have heard of St John's Wort and omega-3s. But did you know there are a lot more over-the-counter herbal products and supplements out there targeting depression? In our review of clinical trials of these products, we found 64 different over-the-counter (OTC) products that have been evaluated for depression – but with differing levels of evidence for each.

16 Jul 2025

Study reveals the psychological reasons for comfort eating

This study explores how expectations influence comfort food consumption, revealing insights into the psychological factors driving eating behaviors.

14 Jul 2025

Fasting triggers neuroprotective changes that could delay dementia

Intermittent fasting could be a neuroprotective strategy, improving gut-brain axis function and reducing inflammation linked to neurodegenerative diseases.

11 Jul 2025

Aspartame triggers genetic changes tied to glioblastoma severity

Study shows aspartame affects gut microbiome and gene expression in glioblastoma, highlighting potential links to cancer progression and treatment strategies.

8 Jul 2025

Amino acid metabolism in breast cancer as a driver of disease and therapeutic target

The review introduces the molecular subtypes of breast cancer and outlines how altered amino acid metabolism supports tumor growth.

7 Jul 2025

New strategy enhances immunotherapy effectiveness against glioblastoma by utilizing gut microbes

Advanced treatments, known as immunotherapies that activate T cells—our body's immune cells—to eliminate cancer cells, have shown limited efficacy as standalone therapies for glioblastoma, the most lethal form of brain tumor.

2 Jul 2025

Daily avocado consumption linked to better sleep and cardiovascular health

A new study suggests that eating one avocado a day may positively impact sleep. Science now confirms sleep is as important for good health as nutrition and exercise.

11 Jun 2025

Myeloid cells shape tumor microenvironments and influence cancer progression

Recent advances in cancer research have underscored the critical role of myeloid cells in shaping tumor microenvironments (TME), influencing tumor progression, immune evasion, and therapeutic resistance.

3 Jun 2025

Metabolite profiles in spinal fluid predict mortality in tuberculous meningitis

Radboudumc researchers Kirsten van Abeelen, Edwin Ardiansyah, Sofiati Dian, Vinod Kumar, Reinout van Crevel and Arjan van Laarhoven used metabolomics to study cerebrospinal fluid (CSF) samples from tuberculous meningitis patients in Vietnam and Indonesia, with long-standing collaborators from Bandung and Jakarta (Indonesia), the Broad Institute (Boston) and the Oxford University Research Unit in Ho Chi Minh City (Vietnam).

22 May 2025

Eating only wild foods reshapes your gut microbiome in just weeks, study shows

A new study shows that an eight-week wild-food-only diet in a modern adult leads to dramatic, partially lasting changes in the gut microbiome’s composition and function. While no “ancestral” microbes reappeared, the shift increased fiber-degrading species and reduced dairy-associated bacteria, highlighting the powerful role of diet.

14 May 2025

Gut bacteria and metabolites reveal depression-linked patterns in older adults

A cross-sectional study of 400 older adults with metabolic syndrome reveals that individuals with depression have distinct gut microbiota and metabolite profiles. Eight bacterial genera and 15 fecal metabolites were significantly associated with depression, suggesting a gut-brain axis link.

29 Apr 2025

Obesity changes how the gut responds to plant compounds, researchers report

Researchers found that the impact of polyphenols rutin and genistein on the human fecal metabolome varies significantly by body mass index (BMI). Lower BMI individuals showed more diverse metabolic responses, revealing how gut health and obesity could shape polyphenol metabolism.

28 Apr 2025

Insights into Raman spectroscopy as a bioprocess analytical technique

Dr. Nimesh Khadka discusses Raman spectroscopy's role in bioprocess monitoring, highlighting its advantages in molecular specificity and real-time analysis.

From Thermo Fisher Scientific – Pharmaceutical and Biopharmaceutical Solutions 23 Apr 2025