Research review priorities
Supplement research priorities
These are research priorities, not recommendations. We selected decisions where public interest, plausible benefit, evidence maturity, and safety stakes make a careful synthesis especially useful.
- priority dossiers
- 148
- claim-level questions
- 444
- study extraction underway
- 148
01 / PRIORITY
How priorities were selected
Priority reflects relevance to healthy aging, frequency of real-world use, maturity of human evidence, the cost of a wrong decision, and the need to separate a valid narrow use from broader marketing claims. It does not rank efficacy or imply that everyone should take the product.
02 / EXTRACTION
What happens next
For every question, we screen the PubMed candidate set, connect multiple publications from the same trial, extract population, dose, comparator, duration, outcomes, harms, and funding, then synthesize supportive, mixed, negative, and safety findings together.
Only screened studies enter audited study and participant totals. Search-result counts and the papers listed here as questions never become evidence by themselves.Chlorella
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Small surrogate changes across heterogeneous populations do not establish clinical benefit, and product quality can alter exposure.
Questions being reviewed
- Does standardized chlorella meaningfully improve lipids, blood pressure, or glucose?
- Do surrogate changes reduce cardiovascular or diabetes complications?
- What vitamin K, warfarin, iodine, allergy, gastrointestinal, contamination, immune, and pregnancy limits apply?
Cranberry extract
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Prevention benefit is population-specific, while product form and proanthocyanidin dose remain uncertain and acute treatment is unsupported.
Questions being reviewed
- Which recurrent-UTI populations benefit from a standardized cranberry product?
- Which juice, extract, or proanthocyanidin dose is effective and adherable?
- What warfarin, kidney-stone, sugar, gastrointestinal, pregnancy, and delayed-antibiotic limits apply?
Beta-sitosterol
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Old short trials suggest symptom relief but no prostate shrinkage, and preparations are not interchangeable with modern BPH care.
Questions being reviewed
- Which beta-sitosterol preparation meaningfully improves validated urinary symptom scores?
- Does beta-sitosterol prevent retention, surgery, or disease progression compared with standard medication?
- What sitosterolemia, cholesterol absorption, medicine, pregnancy, and product-composition limits apply?
Pygeum africanum
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Modest urinary symptom findings come from short, old, preparation-variable trials without comparison to current standard medicines.
Questions being reviewed
- Does a standardized Pygeum extract improve validated lower urinary tract symptom scores?
- How does it compare with alpha-blockers, and does it prevent retention or surgery?
- What gastrointestinal, prostate-cancer evaluation, medicine, fertility, and product-sustainability limits apply?
Horse chestnut seed extract
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Short-term venous symptoms may improve with standardized extract, but definitive long-term trials and serious outcome evidence are absent.
Questions being reviewed
- Does standardized escin-containing extract relieve chronic venous insufficiency symptoms?
- How does it compare with compression and does it prevent ulcers or thrombosis?
- What raw-seed toxicity, liver, kidney, bleeding, diabetes, surgery, pregnancy, and product-standardization limits apply?
03 / SOURCES
Research standards
The review begins with federal evidence summaries and PubMed records, then moves to trial-level extraction. Product claims or another publisher’s evidence grade are not copied into the ledger.