Clinical research, public health and biomedicine — summarized conservatively, with evidence levels and limitations.
Articles in this section summarize medical research for general information. They are not medical advice, and every article shows its evidence level and limitations.
This systematic review examined human studies on gut microbiome changes and peripheral neuropathy. All seven clinical studies reported an association, and six genetic analyses were described as supporting a possible relationship, but the evidence does not prove that gut changes cause nerve problems.
This narrative review examined eating-disorder-focused family therapy for autistic children and young people. It reports that research has linked autism or high autistic traits with greater escalation to intensive care and less positive experiences of therapy, but the review does not show that therapy adaptations cause better outcomes.
This systematic review examined eight randomized trials involving 1,437 people living with cancer. Although some studies reported lower alcohol use in the intervention groups, the studies varied considerably and had important risk-of-bias concerns. The researchers concluded that there is insufficient evidence to establish that these programs reduce alcohol consumption.
This structured narrative review examined whether biological features of pancreatic ductal adenocarcinoma can add information to imaging when considering surgery. It reports that some tumors that appear operable may still have aggressive disease, but several proposed biomarkers require further prospective testing and standardization.
A systematic review and meta-analysis of 10 human studies found that SGLT2 inhibitors were associated with increases in hemoglobin and hematocrit among adults with type 2 diabetes. Real-world data reported a rise in polycythemia prevalence, but evidence about blood-clotting risk was limited and mainly observational. These findings describe associations and do not establish that the medicines cause clotting events.
This human-health meta-analysis compared left atrial appendage closure alone with the same procedure combined with pulmonary vein isolation in people with atrial fibrillation. The combined approach was associated with fewer systemic thromboembolisms during follow-up, but more pericardial effusions requiring drainage around the procedure. Because the review drew largely on heterogeneous observational data, the findings show associations rather than confirmed effects caused by the combined procedure.
A systematic review and meta-analysis of studies in people with multiple sclerosis estimated that neurogenic bladder affected 48.8% of participants overall. The estimates differed substantially between studies, so the result should be understood as a pooled estimate rather than a precise rate for every person with multiple sclerosis.
This systematic review examined experimental immune-cell therapies for pediatric brain tumors, combining preclinical animal studies with early clinical evidence. Animal studies reported antitumor activity for several targets, while small clinical programs reported some tumor regressions, stable disease, and treatment-related side effects that varied by delivery route. The findings are preliminary and do not establish a routine treatment for patients.
This systematic review examined 19 human clinical studies involving 612 patients who received hyperbaric oxygen therapy for selected muscle, ligament, tendon, and bone conditions. Results were mixed: randomized studies did not find a significant benefit for exercise-related muscle damage or delayed muscle soreness, while studies of avascular necrosis and bone marrow edema more consistently reported improvements. The review does not establish that hyperbaric oxygen works for all musculoskeletal conditions.
In a large study of adults over 50 with type 2 diabetes in Taiwan, new dementia diagnoses were less frequent among people who started a GLP-1 receptor agonist than among matched people who started long-acting insulin. The study was observational, so it cannot determine whether the medicines caused the difference.
This narrative review summarizes human poisoning outbreaks, toxicology, regulation, and testing related to diethylene glycol in medicine syrups. It describes serious effects reported after ingestion, with children disproportionately represented in the outbreak accounts, but it is not a new study of patients and does not measure risk in a specific population.
A randomized, placebo-controlled phase 3 trial studied the LZ901 vaccine in 26,018 adults aged 40 and older. Over 12 months, 15 people in the vaccine group and 178 in the placebo group developed confirmed shingles, corresponding to a reported vaccine efficacy of 91.6%. More short-term injection-site and systemic reactions occurred after LZ901, but grade 3 reactions were uncommon in both groups.
In a longitudinal analysis of 14,389 adults from three countries, researchers found that average cognitive test scores showed a detectable decline beginning in the 31–40 age group. Non-memory abilities changed earlier than memory scores, but the observational study does not show that age caused these changes or predict what will happen to any one person.
This integrative review examined 26 peer-reviewed articles on possible brain, psychological, and physical effects after non-fatal strangulation associated with intimate partner violence. The authors reported that the existing literature describes substantial impairments in some affected people, but screening approaches, management methods, and long-term evidence remain inconsistent or limited.
In a small human implementation study in Bangladesh, researchers assessed whether primary health care facilities and health workers were ready to provide anaemia testing and intravenous iron for pregnant women. Health workers reported high psychological readiness, while facilities had unresolved resource shortages; the study did not determine whether the services improved health outcomes.
