Index/Organizations/MDPI

MDPI

Publisher of open access scientific journals

Fact-Checks

44 results
Oct 18, 2025
Most Viewed

Can certain medications induce dry orgasm in men?

Medications can impair male sexual function, and ; however, the literature in the provided set does not consistently label these effects as “dry orgasm” and many studies emphasize erectile dysfunction...

Dec 15, 2025
Most Viewed

Do vacuum erection devices cause permanent penile lengthening or girth changes?

Medical literature and major patient-facing outlets say vacuum erection devices (VEDs)/penis pumps do not produce permanent increases in penile length or girth; they provide temporary engorgement and ...

Nov 20, 2025
Most Viewed

Could honey's compounds plausibly affect brain health or cognitive decline?

Laboratory and animal studies, plus several narrative reviews, report that honey contains phenolic and flavonoid compounds with antioxidant and anti‑inflammatory activity that can protect neurons, red...

Dec 9, 2025

Is there scientific evidence that gelatin or collagen aids rapid weight loss?

Clinical trials and reviews give modest, mixed evidence that gelatin or specially treated collagen can modestly reduce appetite or body weight when used as part of a diet program: a 12‑week randomized...

Jan 13, 2026

What supplements help with post-COVID inflammation?

Post‑COVID (long COVID) inflammation is a heterogeneous, low‑grade immune activation that researchers have targeted with dietary strategies and supplements; some agents — notably vitamin D, omega‑3 fa...

Dec 9, 2025

How does bacopa interact with other supplements or medications affecting cognition?

Bacopa monnieri can alter drug metabolism via inhibition of several cytochrome P450 enzymes (notably CYP3A4, CYP2C9 and CYP2C19) and may therefore raise or lower blood levels of drugs processed by tho...

Jan 12, 2026

What high‑quality clinical trials exist evaluating long‑term cognitive effects and safety of popular nootropic supplements?

High-quality, long-duration randomized controlled trials (RCTs proving durable cognitive benefits or long‑term safety for popular nootropic supplements are scarce: most human trials are small, short (...

Dec 16, 2025

How do the antioxidant and anti-inflammatory properties of honey influence brain aging?

Laboratory and animal studies report that honey’s phenolic and flavonoid compounds reduce oxidative stress markers and some neuroinflammatory signals, and in multiple rodent models this corresponds wi...

Dec 15, 2025

Is there scientific evidence that honey can treat or prevent dementia?

Laboratory and animal studies report that honey’s antioxidant, anti‑inflammatory and other bioactive compounds can protect neurons and improve memory in models — multiple reviews and preclinical paper...

Dec 2, 2025

How do vaccines compare to infection in producing transient versus persistent spike protein?

Studies and reviews show both SARS‑CoV‑2 infection and COVID‑19 vaccination can leave detectable spike protein or spike fragments in blood or tissues for longer than early models predicted; reports do...

Jan 12, 2026

Which OTC supplement ingredients have randomized controlled trial data for modest weight loss, and what are their effect sizes?

Randomized controlled trials support modest average weight loss for a handful of over‑the‑counter (OTC) ingredients: notable meta-analytic estimates include spirulina (≈−1.77 kg), psyllium (≈−3.70 kg)...

Nov 24, 2025

How effective are website fingerprinting and machine learning for deanonymizing hidden-service users?

Website- or browser-fingerprinting and machine‑learning classifiers can and do deanonymize users of encrypted channels — including Tor hidden services — by exploiting traffic patterns (packet sizes, b...

Nov 21, 2025

Tinnitus cure

There is no universally accepted cure for tinnitus, but several emerging treatments have shown real-world benefit: FDA‑approved bimodal neuromodulation (Lenire) reports a 91.5% responder rate in a cli...

Jan 19, 2026

How do payment processors and banks detect and block transactions made with stolen card data?

Payment processors and banks use layered, real-time defenses — machine learning scoring, network-shared intelligence, authentication protocols and rules-based velocity checks — to spot and stop transa...

Jan 17, 2026

What specific documents did DRASTIC publish about RaTG13 and how have genomic experts assessed them?

DRASTIC — the online Decentralized Radical Autonomous Search Team Investigating COVID‑19 — produced several public analyses and reports focused on the provenance and raw data behind the bat coronaviru...

Jan 16, 2026

How do multi‑ingredient weight‑loss blends perform in independent versus industry‑sponsored clinical trials?

Independent trials of multi‑ingredient nutritional blends tend to be small, short, and often double‑blind placebo‑controlled, sometimes reporting modest metabolic or body‑composition benefits over a m...

Jan 16, 2026

Are there clinical trials on honey or honey-derived products for dementia?

Clinical research directly testing honey or honey-derived products for dementia is sparse and weak: the bulk of evidence lies in preclinical studies showing neuroprotective mechanisms (oxidative stres...

Jan 15, 2026

What peer‑reviewed research exists on gelatin or collagen supplements for appetite control and weight loss?

Peer‑reviewed research on gelatin or collagen supplements for appetite control and weight loss is limited but growing: a handful of human randomized trials report modest effects on satiety or body com...

Jan 15, 2026

What does immunobridged mean

Immunobridging is a regulatory and scientific strategy that uses measurable immune responses as surrogate markers to infer how well a vaccine or antibody will protect people, allowing regulators to au...

Jan 12, 2026

Are there clinical trials testing ivermectin as a treatment for liver fibrosis or NAFLD in humans?

No completed or registered human clinical trials testing ivermectin specifically as a therapy for liver fibrosis or nonalcoholic fatty liver disease (NAFLD) are identified in the provided reporting; t...