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.Magnesium oxide
- Review stage
- Extracting studies
- audited research papers
- 3
Why this is a research priority
Magnesium oxide is inexpensive and widely used as a laxative, but lower absorption and indication-specific trials do not support treating it as interchangeable with every magnesium form.
Questions being reviewed
- How effective is magnesium oxide for chronic constipation in adults and children?
- Does magnesium oxide monohydrate reduce nocturnal leg cramps beyond placebo?
- How do lower absorption, laxative effects, kidney function, and hypermagnesemia risk shape safe use?
Magnesium L-threonate
- Review stage
- Extracting studies
- audited research papers
- 4
Why this is a research priority
Magnesium L-threonate is promoted for sleep and cognition from small short trials, several with manufacturer involvement or multi-ingredient products.
Questions being reviewed
- Does magnesium L-threonate improve validated cognitive outcomes in healthy adults or people with impairment?
- Which subjective or objective sleep measures improve, and are findings consistent across trials?
- How do sponsor involvement, branded formulations, and added ingredients limit causal interpretation?
Calcium citrate
- Review stage
- Extracting studies
- audited research papers
- 4
Why this is a research priority
Calcium citrate is less dependent on gastric acid and often outperforms carbonate on absorption markers after bariatric surgery, but that does not prove superior fracture prevention.
Questions being reviewed
- When is citrate absorbed better than carbonate, including low stomach acid and bariatric surgery?
- Does better relative absorption produce superior bone density or fracture outcomes?
- How do urinary calcium, oxalate, kidney-stone risk, constipation, and medicine timing affect use?
Calcium carbonate
- Review stage
- Extracting studies
- audited research papers
- 2
Why this is a research priority
Calcium carbonate is concentrated and inexpensive, but food, gastric acid, adherence, constipation, and baseline calcium status materially change results.
Questions being reviewed
- Does calcium carbonate alone prevent fractures in community-dwelling adults?
- How do adherence and baseline intake modify bone-density and fracture findings?
- How do meals, low stomach acid, constipation, stones, and medicine interactions shape safe use?
Ferrous sulfate
- Review stage
- Extracting studies
- audited research papers
- 4
Why this is a research priority
Ferrous sulfate is an effective standard treatment for confirmed deficiency, but dose frequency changes speed, absorption, gastrointestinal effects, and adherence.
Questions being reviewed
- How effectively does ferrous sulfate correct iron-deficiency anemia?
- How do daily, twice-daily, and alternate-day schedules differ in hemoglobin response and tolerability?
- When is prophylaxis or treatment justified in pregnancy, and what gastrointestinal and overdose precautions 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.