Dirk H. Hellhammer

Daacro (Germany) — Germany

Neuroscience · Life Sciences

100h-index53.6kcitations382works1.22yr avg
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Research Topics

Stress Responses and Cortisol(188), Hormonal Regulation and Hypertension(37), Neuroendocrine regulation and behavior(35), Adrenal Hormones and Disorders(35), Tryptophan and brain disorders(32)

Publications367 total

Vulnerability to memory decline in aging revealed by a mega-analysis of structural brain change
Nature Communications·2025· 1 citedOpen Access
Improving sleep quality and daytime function with a synergistic combination of tryptophan, magnesium, Lactuca, and Melissa: A prospective pilot study in adults with sleep disturbances
Phytochemistry Letters·2025
Improving Sleep and Daytime Function with Tryptophan, Magnesium, Melissa and Lactuca Formulation: An Exploratory Study in Adults with Sleep Disturbances
Nutrition and Dietary Supplements·2025Open Access
52. LYT-300, an Oral Prodrug of Allopregnanolone, Potently Reduces Salivary Cortisol Response to the Trier Social Stress Test in a Randomized, Placebo-Controlled Trial in Healthy Participants
Biological Psychiatry·2024
Efficacy of a fish hydrolysate supplement on sleep quality: A randomized, double-blind, placebo-controlled, crossover clinical trial
Clinical Nutrition ESPEN·2024· 5 citedOpen Access
Kalium phosphoricum comp. in patients with neurasthenia: a randomized, double-blind, placebo-controlled clinical trial
Current Medical Research and Opinion·2023· 2 citedOpen Access
Neurodoron® in patients with neurasthenia – A randomized, double-blind, placebo-controlled clinical trial
2022· 1 citedOpen Access
Neurodoron® for Stress Impairments: A Prospective, Multicenter Non-Interventional Trial
Evidence-based Complementary and Alternative Medicine·2022· 1 citedOpen Access
Aktivitätsaufbau und Behavioral Activation
Psychotherapie: Praxis·2021
Assessment of the Effects of a Sage ( <i>Salvia officinalis</i> ) Extract on Cognitive Performance in Adolescents and Young Adults
2021· 11 cited
Lacticaseibacillus paracasei Lpc-37® improves psychological and physiological markers of stress and anxiety in healthy adults: a randomized, double-blind, placebo-controlled and parallel clinical trial (the Sisu study)
Neurobiology of Stress·2020· 44 citedOpen Access
neuropattern – ein translationales Verfahren zur Stressreduktion am Arbeitsplatz
ASU Arbeitsmedizin Sozialmedizin Umweltmedizin·2020Open Access
Sleep quality and salivary melatonin and cortisol secretion: A pilot study testing the feasibility of a user-friendly ambulant design
Psychoneuroendocrinology·2019
Maternal stress during pregnancy predicts methylation of the glucocorticoid receptor gene (NR3C1) in borderline personality disorder
Psychoneuroendocrinology·2019
Superiority of magnesium and vitamin B6 over magnesium alone on severe stress in healthy adults with low magnesemia: A randomized, single-blind clinical trial
PLoS ONE·2018· 91 citedOpen Access
Neuropattern, a Translational Tool to Reduce Stress at Work – a Pilot Study
Occupational Health Science·2018· 2 cited
Exhaustion mediates the relationship between stress and long-term health status in outpatients
Mental Health & Prevention·2018· 1 cited
Superiority of combined magnesium (MG) and vitamin B6 (VITB6) supplementation over magnesium alone on severe stress in adults with low magnesemia: A randomised, single blind trial
Clinical Nutrition·2018· 3 cited
A lecithin phosphatidylserine and phosphatidic acid complex (PAS) reduces symptoms of the premenstrual syndrome (PMS): Results of a randomized, placebo-controlled, double-blind clinical trial
Clinical Nutrition ESPEN·2018· 14 cited
Conceptual endophenotypes: A strategy to advance the impact of psychoneuroendocrinology in precision medicine
Psychoneuroendocrinology·2018· 27 cited
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Frequent Co-authors

Clemens Kirschbaum(31), Stefan Wüst(11), Brigitte M. Kudielka(10), Nicole C. Schommer(8), Jens C. Pruessner(7), Arthur A. Stone(7), Angelika Buske-Kirschbaum(5), Ilona S. Federenko(5), Ulrike Ehlert(4), Oliver T. Wolf(4), Joshua M. Smyth(4), Jens Gaab(3), Wolff Schlotz(3), Margit C. Ockenfels(3), Laura S. Porter(3), Robert Kumsta(3), Gunther Meinlschmidt(3), Karl‐Martin Pirke(2), Christine Heim(2), Silke Jobst(2)