Supplements

Women receiving garlic tablets showed favorable changes in several metabolic measures compared with placebo, including fasting blood sugar and blood lipids. The trial also reported improvements in quality of life and sexual function. These findings apply to women with both PCOS and metabolic syndrome and do not establish prevention of diabetes or cardiovascular disease.

Keep in mind: The authors note short follow-up, limited dietary control and missing hormone tests. This abstract-based summary cannot establish persistence of the effects or translate marker changes into fewer future health problems.

Among patients with type 2 diabetes and elevated estimated cardiovascular risk, adding curcumin produced favorable differences in blood pressure, selected cholesterol measures and cardiovascular risk classification. Blood-sugar measures showed no statistically significant differences between groups. The abstract does not establish fewer cardiovascular events or explain how large the favorable changes were.

Keep in mind: This abstract-based account lacks follow-up duration and effect sizes. Reported adverse effects have no clearly identified denominator or control-group comparison, limiting interpretation of tolerability.

Among adolescent male basketball players, creatine improved dribbling, passing and shooting tests performed alongside mental subtraction compared with placebo. For basketball skills tested alone, significant improvements were reported for dribbling and shooting. The abstract does not give improvement sizes or establish better game performance, longer-term effects or safety in broader populations.

Keep in mind: This abstract-based account concerns a narrowly defined group over short supplementation periods. Effect sizes and adverse-event results were not supplied, limiting assessment of practical importance and safety.

In combat sport athletes, the review reported increases in body mass, fat-free mass, strength and power with creatine supplementation. It reported no improvements in sport-specific endurance, recovery or fatigue, which does not establish absence of effects. The abstract does not quantify these findings or show how they affected weight-class eligibility or competitive results.

Keep in mind: The abstract omits comparison details, effect sizes and study-quality results. No serious adverse effects were reported, but this does not establish absence of harm across all athletes or supplementation periods.

Among healthy adults taking single doses while fasting, Zenroot produced higher measured blood exposure to total withanolides than the reference products. This was a formulation-specific absorption comparison, not a test of symptom improvement. The result cannot establish that a lower dose gives better health outcomes, and the authors call for studies that actually evaluate those benefits.

Keep in mind: Single-dose blood measurements cannot establish effects during repeated use or long-term safety. Although Zenroot was described as well tolerated, the abstract supplies no detailed adverse-event results or numerical confidence limits for the reported bioavailability ratios.

Across the reviewed randomized trials, ashwagandha was linked to lower cortisol levels, but a statistically significant benefit on perceived stress was not established. A change in this biological marker therefore should not be presented as proof that participants felt less stressed. The review also leaves uncertainty about longer-term safety and how results apply to different populations.

Keep in mind: Risk of bias was generally moderate, and some studies lacked concealed treatment allocation. The abstract does not describe control treatments or participant characteristics and identifies gaps in long-term safety and effectiveness across diverse populations.

Some silymarin regimens showed favorable changes in cholesterol or liver enzyme measurements, while other estimates remained statistically uncertain. The review also reported more adverse effects with silymarin use, most commonly gastrointestinal problems. Because interventions and controls varied, these findings do not establish a single overall benefit or show that laboratory changes improved patients' health.

Keep in mind: The abstract does not map every result to a specific control or report treatment durations. Its liver-fat reduction descriptions lack enough detail for a clear quantitative interpretation.

In controlled studies of people with hypertension, garlic extracts were associated with lower systolic and diastolic blood pressure than placebo. These are the upper and lower numbers in a blood-pressure reading. The result concerns blood pressure, while the abstract does not report cardiovascular events, product doses or how long the effects lasted.

Keep in mind: The abstract does not state the units for its pooled blood-pressure differences or give intervention lengths, extract doses or preparation details. Those omissions prevent a clear interpretation of the numerical effects.

For adults with depressive symptoms or a depression diagnosis, this review mapped research on nonprescription products rather than identifying a best treatment. Evidence was concentrated in a few products, while many others had sparse research. Descriptions of promising evidence, without effect estimates, leave both effectiveness and safety questions unresolved.

Keep in mind: Products were described as promising without product-specific effect estimates. The abstract also omits the trial comparators and follow-up periods, so it cannot show which products work best or whether effects persist.

For people with knee osteoarthritis, the review reported lower pain scores with turmeric preparations used alone than with placebo. It also examined combinations with conventional pain medicines. The authors rated the evidence as low certainty, so the findings remain tentative and do not establish which preparation provides the most dependable benefit.

Keep in mind: Evidence certainty was low. This abstract-based summary lacks treatment lengths, doses and the pain scale's scoring range, limiting interpretation of the reported differences between groups.

The review reported an improvement in overall menopausal symptom scores, alongside improvements in some individual symptoms. It did not find statistically significant effects on hot flushes, sweating, insomnia or several other complaints. The authors urged caution because samples were small. Without information about comparison treatments and study duration, the abstract cannot show precisely what soy was tested against.

Keep in mind: The authors identified small samples as a limitation. The abstract also omits treatment doses, study durations and comparator details, preventing a clear assessment of practical relevance or lasting effects.

The tested probiotic did not show a statistically clear advantage over placebo for bone density near the hip or estimated fracture risk. Blood markers of bone activity also showed no mean difference between groups from the start to the end of the study. These results concern this supplement and population; they do not establish that every probiotic has the same effects.

Keep in mind: The abstract reports significance tests but not the size or uncertainty range of treatment differences. Fracture risk was estimated with a prediction tool, rather than established through a reported comparison of actual fractures.

During alternate-day fasting, adults with overweight taking krill oil had smaller declines in fat-free mass, meaning body mass excluding fat, and handgrip strength than those taking vegetable-oil placebo. The differences in change were statistically significant. Weight loss did not differ significantly between groups, so the trial did not show a clear added weight-loss effect.

Keep in mind: This was a short trial in adults following a specific fasting program. The abstract does not report longer-term outcomes or adverse effects, and its findings cannot establish effects outside that setting.

The supplement group reported improvements in some knee symptoms, sport and recreation, and quality-of-life measures compared with placebo. However, the trial did not meet its primary endpoint, which the abstract does not identify. Pain improved in both groups, so those pain results do not establish an advantage for the supplement over placebo.

Keep in mind: This was a pilot study, and its primary endpoint was not achieved or identified in the abstract. Reported percentage changes lack sufficient detail to distinguish changes within groups from the size of differences between groups.

The pooled trials suggest possible improvements in delirium, reported sleep quality, and time spent in intensive care with melatonin. However, confidence in these findings was low. Effects on death in intensive care and functioning afterward remained uncertain, so the sleep and delirium findings do not establish a broader recovery benefit.

Keep in mind: Study bias and inconsistent results lowered evidence certainty. The abstract does not provide treatment schedules or outcome assessment periods, limiting interpretation of when and under what conditions the possible benefits occurred.

In trained male cyclists, the supplement combination did not show a statistically significant performance advantage over placebo after the study period. Aerobic power improved across testing sessions, without evidence that supplementation explained the improvement. The supplement group also had a reported reduction in blood lactate, but this blood measurement did not establish improved exercise performance.

Keep in mind: The abstract does not clearly identify the comparator for the lactate reduction. Its performance findings apply to trained men over a short study period, and nonsignificant differences do not establish equivalence.

Among physically active men, adding omega-3 supplementation to a shared resistance-training programme produced greater improvements on physical performance tests than training alone. The supplemented group also had changes in blood fats and other blood markers. However, the abstract does not quantify the performance advantage and is less explicit about between-group comparisons for the blood results.

Keep in mind: The abstract gives no numerical performance differences, confidence intervals or detail on blinding. Participants were healthy, active men, limiting how broadly these results can be applied.

The supplement combination lowered a score combining inflammation markers compared with placebo after researchers adjusted for several participant characteristics. Nutrient-status markers also increased. The abstract gives no size for the inflammation-score difference or evidence of improved symptoms or disease outcomes, so this result concerns measured markers rather than a demonstrated health benefit.

Keep in mind: The abstract reports statistical significance without the inflammation-score difference or its confidence interval. Its healthy, active participants limit how directly the findings apply to older adults with different health circumstances.

Across trials in people with type 2 diabetes, magnesium supplementation lowered fasting blood sugar, but the change in glycated haemoglobin was minimal. The abstract does not give measurement units, treatment lengths, or control details, so the results cannot show the practical size of the change or identify a suitable supplementation approach.

Keep in mind: The reported glucose differences lack units, and control conditions and treatment durations are unspecified. The glycated haemoglobin confidence interval reaches zero, leaving uncertainty about whether that measure changed.

The trial offered limited support for adding mangosteen extract to improve bipolar depression. Overall depressive-symptom changes did not substantially differ between groups. Mood symptoms, assessed illness severity and social functioning improved more with the extract at treatment end, but these differences weakened after discontinuation. Benefits for manic symptoms or quality of life were not demonstrated.

Keep in mind: The abstract describes an analysis of treatment completers and supplies no effect sizes or confidence intervals. It therefore leaves the magnitude and precision of the reported improvements unclear.

Among very preterm or very low birth weight infants, the review did not establish that vitamins A or D improved survival without neurodevelopmental disability. Some vitamins were associated with fewer specific complications during neonatal care, but certainty varied by outcome. Sparse developmental follow-up and differing trial designs prevented a clear conclusion about a supplementation regimen.

Keep in mind: Evidence for later development was very uncertain and came from few studies. Most shorter-term findings also had low certainty. The abstract does not detail control regimens, making it difficult to identify precisely what each supplementation comparison tested.

Across trials of aged garlic, pooled results showed reductions in systolic blood pressure and LDL cholesterol. Diastolic pressure and HDL cholesterol showed no statistically clear effects, while total cholesterol remained uncertain. The abstract does not identify the overall participant population or comparison treatments, and these measured changes do not establish fewer cardiovascular events.

Keep in mind: Treatment durations, comparator details and participant totals are missing from the abstract. Outcomes were blood pressure and lipid measurements; clinical outcomes and adverse-event results are not reported.

The collagen group showed increases in calf muscle stiffness, Achilles tendon stiffness and the rate of force production at the ankle. The placebo group did not show statistically significant changes in those measures. However, that pattern alone does not establish a difference between groups; the abstract does not report the direct between-group comparison needed to assess superiority.

Keep in mind: The reported statistics describe changes within each group rather than a direct treatment-versus-placebo effect. The participants were healthy young sedentary men, and the abstract does not report an athletic performance outcome.

In adults enrolled in controlled trials, HMB supplementation increased testosterone levels in the pooled analysis. Changes in cortisol, insulin-like growth factor and growth hormone were statistically inconclusive. The review addressed hormone levels, so its findings do not establish gains in muscle mass or physical performance, and the abstract does not identify the comparison treatments.

Keep in mind: The abstract omits supplementation duration, doses and comparator details. Evidence quality ranged from low to high, but it does not identify the quality rating for each hormone result.