Component
Sodium bicarbonate
NaHCO3, delivering sodium and bicarbonate together.
2 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
Where it participates (unsigned role)
The bicarbonate-containing arms reduced calcium excretion relative to non-bicarbonate arms in the older-adult trial; a potassium main effect was not significant.
Experimental context and source evidence
- cross_nutrient
- Bicarbonate coadministration modifies the calcium response attributed to potassium salts.
- endpoint
- The bicarbonate-containing arms reduced calcium excretion relative to non-bicarbonate arms in the older-adult trial; a potassium main effect was not significant.
- experimental-exposure
- 171 adults aged at least 50 randomized to placebo, KHCO3, NaHCO3, or KCl at 67.5 mmol/day for three months; 162 analyzed; all received calcium and vitamin D.
- experimental_model
- 171 adults aged at least 50 randomized to placebo, KHCO3, NaHCO3, or KCl at 67.5 mmol/day for three months; 162 analyzed; all received calcium and vitamin D.
- limitations
- Pooled factorial comparison, calcium/vitamin D co-supplementation, three-month surrogate endpoint; not evidence of fracture prevention or universal potassium neutrality.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Homo sapiens
- plain_language
- The calcium-loss effect tracked the alkali component rather than the presence of potassium in the salt.
- primary_references
- [dawson-hughes-2009-bicarbonate] Treatment with Potassium Bicarbonate Lowers Calcium Excretion and Bone Resorption in Older Men and Women (2009). https://pmc.ncbi.nlm.nih.gov/articles/PMC2630872/ DOI: 10.1210/jc.2008-1662
- tissue_or_cell_type
- kidney and urine
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1260–1272
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 171 adults aged at least 50 randomized to placebo, KHCO3, NaHCO3, or KCl at 67.5 mmol/day for three months; 162 analyzed; all received calcium and vitamin D. · source_derived_draft · unverified_draft
### bicarbonate-component-lowers-calciuria The bicarbonate-containing arms reduced calcium excretion relative to non-bicarbonate arms in the older-adult trial; a potassium main effect was not significant. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The calcium-loss effect tracked the alkali component rather than the presence of potassium in the salt. organism: Homo sapiens tissue_or_cell_type: kidney and urine experimental_model: 171 adults aged at least 50 randomized to placebo, KHCO3, NaHCO3, or KCl at 67.5 mmol/day for three months; 162 analyzed; all received calcium and vitamin D. limitations: Pooled factorial comparison, calcium/vitamin D co-supplementation, three-month surrogate endpoint; not evidence of fracture prevention or universal potassium neutrality. cross_nutrient: Bicarbonate coadministration modifies the calcium response attributed to potassium salts. experimental-exposure: 171 adults aged at least 50 randomized to placebo, KHCO3, NaHCO3, or KCl at 67.5 mmol/day for three months; 162 analyzed; all received calcium and vitamin D. endpoint: The bicarbonate-containing arms reduced calcium excretion relative to non-bicarbonate arms in the older-adult trial; a potassium main effect was not significant. [dawson-hughes-2009-bicarbonate] Treatment with Potassium Bicarbonate Lowers Calcium Excretion and Bone Resorption in Older Men and Women (2009). https://pmc.ncbi.nlm.nih.gov/articles/PMC2630872/ DOI: 10.1210/jc.2008-1662
Complete structured claim and evidenceBicarbonate salts and potassium gluconate increased bicarbonate in the CKD crossover; urinary citrate rose and ammonium fell.
Experimental context and source evidence
- cross_nutrient
- Salt anion -> bicarbonate/citrate/ammonium.
- experimental_model
- 31 participants; five-day randomized periods.
- limitations
- Short exposure and washout; unchanged diet advised rather than controlled.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Homo sapiens
- plain_language
- The accompanying anion changed the acid-base response.
- primary_references
- [k-ckd-salts2026] Randomized Cross-Over Trial of Electrolyte, Acid-Base and Blood Pressure Effects of Salt Supplements in CKD (2026). https://pubmed.ncbi.nlm.nih.gov/42381762/ DOI: 10.1016/j.ekir.2026.106619
- tissue_or_cell_type
- Plasma and urine
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1662–1672
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 31 participants; five-day randomized periods. · source_derived_draft · unverified_draft
### k-ckd-salts-alkalizing-comparison Bicarbonate salts and potassium gluconate increased bicarbonate in the CKD crossover; urinary citrate rose and ammonium fell. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The accompanying anion changed the acid-base response. organism: Homo sapiens tissue_or_cell_type: Plasma and urine experimental_model: 31 participants; five-day randomized periods. limitations: Short exposure and washout; unchanged diet advised rather than controlled. cross_nutrient: Salt anion -> bicarbonate/citrate/ammonium. [k-ckd-salts2026] Randomized Cross-Over Trial of Electrolyte, Acid-Base and Blood Pressure Effects of Salt Supplements in CKD (2026). https://pubmed.ncbi.nlm.nih.gov/42381762/ DOI: 10.1016/j.ekir.2026.106619
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.