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Browse the failure-mode index

11,324 real negative results, null findings, and replication failures in Medicine · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportMedicine

Behavioral Adaptation to Neck Radio-Collars and Its Relations with Temperament in Two Neotropical Psittacid Species.

de Almeida GN, de Jesus LG, Branco MEC et al. · 2026 · Journal of applied animal welfare science : JAAWS

Track devices can cause behavioral, physical, and physiological adverse effects, with individuals varying in how quickly they adapt to them. We examined behavioral effects of replica radio-collars on two captive psittacid species,…

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Negative / Null Result ReportMedicine

Impact of tighter glycaemic targets on pregnancy outcomes in a multi-ethnic cohort with gestational diabetes: A retrospective, single centre observational study.

Huda MS, Margari N, Islam N et al. · 2026 · Obstetric medicine

Aims To determine the impact of tighter glycaemic targets for gestational diabetes. Methods Retrospective data analysis before and after introducing tighter glucose targets. Results In 2265 pregnancies there was no change in…

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Negative / Null Result ReportMedicine

Mental rotation performance after acute stress.

Richardson AE, VanderKaay Tomasulo MM · 2026 · BMC psychology

Background The need to mentally rotate objects is common in everyday activities (e.g., driving, loading suitcases in a car, playing 3D video games) and in specific professions (e.g., air traffic controllers, mechanics, pilots, surgeons).…

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Negative / Null Result ReportMedicine

The Importance of Objective Functional and Balance Testing in Pediatric Anterior Cruciate Ligament Reconstruction for a Safe Return-To-Sport: A Two-Year Prospective Study.

Crippa M, Turati M, Flumian C et al. · 2026 · Journal of ISAKOS : joint disorders & orthopaedic sports medicine

Introduction/objectives Pediatric anterior cruciate ligament reconstruction (ACLR) outcomes, particularly long-term functional recovery and return-to-sport (RTS), remain debated and have not been well characterized in skeletally immature…

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Negative / Null Result ReportMedicine

The impact of hormonal contraceptives containing estradiol, estradiol valerate, and estetrol on liver proteins, lipids, glucose, blood pressure, and bone. A literature review.

Cagnacci A, Xholli A, Gabbi L et al. · 2026 · The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception

Objective We investigated the metabolic profile induced by contraceptives containing body-identical oestrogens. Methods A literature search was made for articles on contraceptives with oestradiol/nomegestrol acetate (E2/NOMAc), oestradiol…

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Negative / Null Result ReportMedicine

Quantification of Changes in Bifidobacteria and Lactobacilli Colony-forming Units During Rifaximin Treatment and Synbiotic Gel in Healthy Volunteers.

Cassís-Nosthas ML, Vorácková FV, Dzib FT et al. · 2026 · Journal of visualized experiments : JoVE

Although the gut microbiota is generally stable, it can be influenced by antibiotic treatment. Rifaximin, which is used to treat gastrointestinal disorders, is frequently administered with probiotics to reduce the risk of dysbiosis.…

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Negative / Null Result ReportMedicine

Cerebral physiology following general anaesthesia with sevoflurane or propofol in healthy volunteers - a randomised, single-blind cross-over trial.

Madsen SS, Asghar MS, Lindberg U et al. · 2026 · Journal of applied physiology (Bethesda, Md. : 1985)

Although general anaesthesia is a very common medical procedure, knowledge of how the brain physiologically recovers remains limited. In this randomized cross-over trial, we investigated brain physiology during recovery from general…

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Negative / Null Result ReportMedicine

Eight weeks of high-intensity interval training is insufficient to prevent sitting-induced endothelial dysfunction and microvascular impairment.

Kasai N, Ihara H, Iemitsu M et al. · 2026 · Experimental physiology

Prolonged sitting disrupts lower-limb endothelial and microvascular function, likely via reduced shear stress and blunted microvascular reactivity. We examined whether Tabata-style high-intensity interval training (HIIT) mitigates this…

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Negative / Null Result ReportMedicine

Sexual health following hyperbaric oxygen treatment in pelvic cancer survivors with radiation injuries: a longitudinal observational study.

Hauken MA, Gjestad R, Sekse RJT et al. · 2026 · The journal of sexual medicine

Background Hyperbaric oxygen therapy (HBOT) is an established treatment for pelvic late radiation tissue injuries (LRTIs) in cancer survivors, yet its impact on sexual health outcomes has previously not been examined. Aim To investigate…

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Negative / Null Result ReportMedicine

Long-term risk of major adverse cardiovascular events after carotid endarterectomy-a 9-year prospective cohort study of the Athero-Express biobank.

Mol BM, de Bresser CJM, de Kleijn PV et al. · 2026 · European stroke journal

Carotid endarterectomy (CEA) is performed to lower the long-term risk of stroke in patients with carotid stenosis. Data evaluating long-term outcomes after CEA are scarce, but crucial for accurately determining long-term benefits. We aimed…

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Negative / Null Result ReportMedicine

Efficacy of Aerobic Exercise on Brain MRI Measures in Parkinson's Disease.

Langeskov-Christensen M, Nygaard MKE, Eskildsen SF et al. · 2026 · Neurorehabilitation and neural repair

Objectives Medical disease-modifying treatments are lacking in Parkinson's disease (PD). Physical exercise is potentially an inexpensive and easily accessible disease-modifying therapy, but this remains to be studied using recent promising…

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Negative / Null Result ReportMedicine

Auditory mismatch-negativity predicts response to dorsomedial prefrontal intermittent theta-burst stimulation in major depressive disorder.

Anderson M, Bodén R, Wass CE et al. · 2026 · Journal of affective disorders

Background Impaired plasticity has been implicated in major depressive disorder (MDD), which is reflected in impaired automatic sensory detection as measured using mismatch negativity (MMN). Intermittent theta-burst stimulation (iTBS) is…

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Negative / Null Result ReportOpen accessMedicine

Increased cytokine production capacity and persistent inflammation after achieving remission of Cushing's syndrome.

van Houten P, van de Ven AC, van Herwaarden AE et al. · 2026 · Journal of clinical & translational endocrinology

Endogenous Cushing's syndrome (CS) is characterized by chronic hypercortisolism. After achieving remission, morbidity remains increased and quality of life remains impaired. Moreover, the incidence of inflammatory disorders increases after…

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