Supplements

Propolis supplementation was linked to lower fasting blood sugar and triglycerides in the pooled trials. Total cholesterol, LDL cholesterol and HDL cholesterol did not change significantly. These blood-test findings do not establish fewer diabetes complications, cardiovascular events or deaths, and they do not show a benefit for people outside these clinical groups.

Keep in mind: The authors highlight few available studies and relatively small samples. The abstract does not identify comparison treatments, supplementation doses or trial durations, making the pooled findings harder to apply.

The review found insufficient reliable evidence that succinate supplementation improves exercise performance. Some studies reported gains, but most were judged at high risk of bias and most tested ingredient blends. The study rated at low risk of bias found no performance benefit. Recovery-specific results were not summarized in the abstract.

Keep in mind: Most interventions used ingredient blends, so effects cannot be attributed confidently to succinate alone. Differences between studies and methodological weaknesses prevented statistical pooling. This summary is based on the abstract.

The combined supplement did not show added improvement in mood symptoms compared with placebo during this trial. Both groups improved, so changes within the supplement group alone would give a misleading picture of its effect. The findings do not establish that the treatments are equivalent or explain why participants in both groups improved.

Keep in mind: The abstract gives no between-group effect sizes or confidence intervals and does not clarify whether participants had diagnosed mood disorders. The precision and wider relevance of the null results remain uncertain.

The human studies did not give a consistent answer about whether Cordyceps militaris improves exercise performance or recovery. Some studies reported improvements, but small samples and other study limitations weakened confidence in those findings. Ingredient blends were among the preparations tested, which also makes it difficult to attribute favorable results to this fungus alone.

Keep in mind: This abstract-based assessment is limited by small samples, incomplete randomization reporting, inconsistent preparations, and ingredient blends. The abstract gives no detailed comparisons for individual performance or recovery outcomes.

The review reports higher cardiovascular risk with performance-enhancing substance use and describes unintentional doping as a concern in competitive sport. It also summarizes favorable nutrition findings. However, the abstract does not give enough detail to establish how particular substances or nutrition strategies compare, or how reliable the reported benefits are.

Keep in mind: The abstract does not identify comparison groups, follow-up periods or certainty ratings for individual results. It also reports nutritional outcomes without enough detail to separate the effects of different strategies.

In this trial, rhodiola improved average repeated-sprint performance and decision-making under fatigue compared with placebo. The fastest sprint time did not show a statistically significant difference between groups. The pattern suggests a possible benefit for maintaining performance, but the abstract leaves the size of the improvements and their practical importance unclear.

Keep in mind: Only male football players were studied. The abstract gives no supplement dose, effect sizes or confidence intervals for the performance results, and it does not report adverse events.

Both tested doses of sustained-release ashwagandha improved perceived stress, sleep quality, psychological well-being and eating behavior compared with placebo by the end of the trial. The abstract does not quantify the placebo-adjusted stress difference or demonstrate that the higher dose was superior. These findings concern this formulation and the healthy, stressed adults enrolled.

Keep in mind: The abstract reports no safety concerns during the trial, but gives limited adverse-event detail. It does not establish longer-term safety or provide confidence intervals for the differences between groups.

This trial reported falling cortisol levels in every group, including placebo. The proprietary extract also differed statistically from the other extract and placebo on several symptom and well-being scales. However, the abstract does not provide a between-group cortisol result or numerical symptom differences, so it cannot establish the size of any advantage on the main outcome.

Keep in mind: Missing cortisol comparisons, numerical symptom effects and adverse-event results prevent a full assessment of efficacy or safety from this abstract.

This review found different levels of support across medical settings. It did not support routine high-dose intravenous vitamin C for sepsis, while describing its cancer role as supportive and exploratory. Laboratory mechanisms and encouraging early clinical reports do not establish broad patient benefit, and the abstract highlights risks alongside limited evidence for home infusion.

Keep in mind: Study counts, pooled clinical effects and methods for assessing bias are absent from the abstract. Conclusions about particular treatments or infusion settings therefore remain difficult to verify.

The review linked low blood vitamin D with greater bladder cancer risk, but that association does not show that raising vitamin D prevents cancer. A separate analysis of higher levels was statistically inconclusive, and evidence on food intake or supplements remained unsettled. These are different questions and should not be treated as interchangeable.

Keep in mind: Only the abstract was available. It does not specify the reference groups or follow-up periods behind the pooled risk estimates, and its dietary and supplement evidence is explicitly inconclusive.

The review reported fewer pregnancy-related cramps with magnesium, but no statistically significant effect for persistent or nighttime leg cramps in adults. Results from other settings were mixed. The abstract discusses possible relevance to jaw muscle pain, yet provides no direct treatment result for temporomandibular disorders. It therefore cannot establish that electrolyte supplements relieve that condition.

Keep in mind: This abstract-based summary cannot resolve how the pregnancy cramp outcome was coded: the reported risk ratio’s direction is not explained. Trial durations and detailed comparisons for other settings are also missing.

Supplementation trials reported improvements in several markers relevant to long COVID. However, the abstract does not establish that those trials enrolled people with long COVID. A separate analysis found lower blood taurine in people with persistent symptoms. This association cannot show that a taurine supplement would improve their symptoms.

Keep in mind: The abstract does not describe trial populations, durations or comparators, or report direct long COVID symptom benefits. Blood-level associations cannot establish causation.

Women assigned to the red ginseng drink had better menopause symptom scores than those given placebo by the end of the trial. That supports a possible short-term symptom benefit in this study population. The abstract provides statistical significance without the size of the score difference, so the practical importance remains uncertain.

Keep in mind: This abstract-based account cannot establish longer-term safety. The abstract reports no differences in several safety tests, but gives no adverse-event counts or symptom-score effect sizes; some secondary results have an unclear comparator.

In athletes and physically active people, pooled trials favored melatonin over placebo for endurance and explosive power. Creatine kinase levels also decreased, but lactate dehydrogenase did not show a statistically significant change. These laboratory measures alone do not establish better recovery or fewer injuries, and subgroup patterns do not establish an optimal regimen.

Keep in mind: The abstract omits trial durations, adverse-event findings and details of direct timing comparisons. It cannot establish lasting benefit, safety or a preferred supplementation schedule.

Across trials in adults with obesity-related metabolic disorders or risk factors, resveratrol showed improvements in selected measures, including insulin resistance, cholesterol and blood pressure. Body weight and liver fat did not change consistently. These findings concern measured risk factors; the abstract does not establish that supplementation prevents diabetes, cardiovascular disease or other long-term illness.

Keep in mind: The abstract omits numerical effect sizes, confidence intervals, comparator details and study durations. This abstract-based account cannot judge how large the changes were, and it does not identify an optimal dose.

In patients newly diagnosed with glioblastoma, adding a micronutrient mixture to postoperative chemoradiation did not demonstrate a statistically significant improvement in overall survival compared with placebo. The reported survival figures were close, but that does not prove the treatments were equivalent. The authors say larger, adequately powered trials are needed to clarify any effect.

Keep in mind: This abstract-based summary lacks survival confidence intervals and does not identify the reported figures as means or medians. The authors emphasize the need for sufficiently powered trials.

Inositol had favourable results for several hormone, metabolic and reproductive outcomes compared with placebo or the comparator labelled FA. Most comparisons with metformin were statistically nonsignificant, which does not establish equivalence. This abstract-based summary suggests possible benefits for women with PCOS, while the evidence remains uncertain and varies by outcome.

Keep in mind: No evidence item was rated high quality. The abstract omits certainty ratings specific to live births, baseline live-birth rates and follow-up durations, limiting interpretation of the relative estimate.

The broccoli-derived supplement showed no statistically detectable recovery advantage over placebo after the exercise challenge. Strength, soreness and other measures changed over time, but the changes did not differ significantly by supplement. This abstract-based result applies to the tested preparation and protocol; a nonsignificant result does not rule out every possible effect.

Keep in mind: This small trial tested a short supplementation period, a specific arm-exercise challenge and powder reconstituted with hot water. The abstract does not provide effect estimates or confidence intervals to show which benefits remain plausible.

Adding arginine and omega-3 around gastrointestinal cancer surgery did not produce statistically significant differences in mortality, infections, hospital stay, intensive-care duration or inflammatory markers compared with standard care. This abstract-based pilot trial found no clear added benefit under the tested conditions, while its small sample leaves uncertainty about effects a larger study might detect.

Keep in mind: The trial was a small, open-label pilot in a clinically varied group. The abstract gives no confidence intervals for the main clinical comparisons, so nonsignificant results cannot establish equivalence or exclude a meaningful benefit.

Compared with placebo, ashwagandha was associated with lower cortisol in the pooled trials. The review also reported changes in serotonin, thyroid-hormone measurements and testosterone, alongside several null results. These are laboratory outcomes; the abstract does not show whether participants felt better or experienced other clinical benefits. Differences between studies limit confidence in a single overall effect.

Keep in mind: The authors report differences between studies and limited data for some outcomes. The abstract does not report treatment durations, clinical benefits or safety results, limiting interpretation beyond hormone measurements.

Among people with chronic kidney disease, melatonin trials showed improved sleep quality scores, higher HDL cholesterol and lower malondialdehyde, an oxidative stress marker. Triglycerides, total cholesterol, LDL cholesterol and C-reactive protein did not show statistically significant changes. These findings do not establish fewer cardiovascular events or broad benefits for people without kidney disease.

Keep in mind: Sleep and oxidative stress results varied substantially across trials. The abstract omits participant numbers, doses, durations and comparator details, limiting assessment of practical relevance.

For women with polycystic ovary syndrome undergoing IVF, vitamin D supplementation increased blood vitamin D levels but did not show a clear improvement in live birth after the first embryo transfer. The result separates a laboratory response from the fertility outcome that mattered most in this trial, while leaving some uncertainty about the true effect.

Keep in mind: This abstract-based summary concerns pretreatment before IVF and live birth after the first transfer. It does not establish effects on cumulative live births across later transfers or on fertility in people without polycystic ovary syndrome.

Garlic supplementation was linked to lower fasting blood sugar, the blood marker HbA1c, and total cholesterol in the pooled trials. Overall changes in LDL cholesterol, HDL cholesterol and triglycerides were not statistically significant. These laboratory findings come from low-quality, highly variable studies and do not establish fewer diabetes complications or a reliable benefit for an individual.

Keep in mind: The authors judged the studies to be low quality. The abstract omits measurement units, intervention lengths and control treatments for the main pooled comparisons, making the size and practical meaning of the changes difficult to assess.

Saffron supplementation reduced self-reported depression and anxiety scores compared with placebo in this review. Results were not statistically significant on clinician-rated depression and anxiety measures or the broader mood measure. The evidence therefore suggests possible improvement on particular measures, without establishing consistent improvement across the different ways mental health was assessed.

Keep in mind: This abstract-based summary cannot show how noticeable the questionnaire differences were to participants. The review rates evidence certainty as moderate, and results varied widely between studies.