Phosphorus
Phosphorus
TL;DR
Phosphorus is an essential mineral abundant in virtually all diets; true deficiency is rare outside refeeding syndrome, alcoholism, and antacid overuse, so routine supplementation is almost never appropriate.
Ideal For
- People with medically confirmed hypophosphatemia
Avoid If
- You have chronic kidney disease (restriction is usually required)
- You eat a normal diet (you already get plenty)
Frequently Asked Questions
Overview
The RDA for phosphorus is 700mg/day for adults, and typical Western diets supply 1,400-2,000mg, partly from phosphate additives in processed foods with nearly 100% absorption. Deficiency occurs mainly in refeeding syndrome after starvation, chronic alcoholism, long-term aluminum/magnesium antacid use, and uncontrolled diabetes; symptoms include weakness, bone pain, and in severe cases respiratory failure and hemolysis. Supplementation is a medical therapy in these contexts, not a wellness product. Conversely, elevated serum phosphate drives FGF23 up and is associated with cardiovascular calcification, and people with chronic kidney disease must restrict phosphorus. The practical guidance: meet needs through food; supplement only under medical supervision for documented deficiency.
How It Works
- Structural component of hydroxyapatite in bone and teeth
- Backbone of ATP, the cell's energy currency
- Component of phospholipids, DNA, and RNA
- Regulated tightly by PTH, FGF23, and vitamin D through renal excretion
Benefits & Outcomes
No linked outcomes yet. Research is ongoing.
Health Concerns Addressed
No linked health concerns yet.
Supporting Research8 studies
Magnesium, Calcium, Potassium, Sodium, Phosphorus, Selenium, Zinc, and Chromium Levels in Alcohol Use Disorder: A Review
Baj J
Review of mineral status in alcohol use disorder found consistently low magnesium, zinc and selenium levels and frequently disturbed calcium, potassium, sodium and phosphate balance, driven by poor intake, gastrointestinal losses, renal wasting and liver dysfunction; deficiencies were linked to withdrawal severity, neuropathy, arrhythmia risk and refeeding complications.
Effects of Vitamin B6 on Mood and Anxiety
McCarty MF
Hypothesis paper proposing that vitamin B6 as pyridoxal-5-phosphate is rate-limiting for synthesis of serotonin, GABA and dopamine, and that supplementation could therefore improve mood and anxiety, particularly in premenstrual syndrome and in people with poor B6 status or oestrogen-related B6 depletion.
Effect of nicotinamide and lanthanum carbonate on serum phosphate in chronic kidney disease: the COMBINE randomized clinical trial
Ix JH, Isakova T, Larive B
Nicotinamide did not significantly lower serum phosphate or FGF23 in CKD and caused more gastrointestinal effects and thrombocytopenia.
Serum levels of phosphorus, parathyroid hormone, and calcium and risks of death and cardiovascular disease in individuals with chronic kidney disease: a systematic review and meta-analysis
Palmer SC, Hayen A, Macaskill P +4 more
Each 1 mg/dL increase in serum phosphorus was associated with an 18% higher risk of death in people with chronic kidney disease
Public health impact of dietary phosphorus excess on bone and cardiovascular health in the general population
Calvo MS, Uribarri J
Habitual phosphorus intakes well above requirements are associated with elevated fibroblast growth factor 23, vascular calcification and adverse bone signalling
Phosphorus: Fact Sheet for Health Professionals
National Institutes of Health Office of Dietary Supplements
Phosphorus deficiency is rare in developed countries because phosphorus is abundant in food and food additives; supplementation is rarely required
High dietary phosphorus intake is associated with all-cause mortality: results from NHANES III
Chang AR, Lazo M, Appel LJ +2 more
Phosphorus intake above about 1400 mg/day was associated with higher all-cause and cardiovascular mortality
Effects of Excessive Dietary Phosphorus Intake on Bone Health
Vorland CJ, Stremke ER, Moorthi RN +1 more
High phosphorus intake raises parathyroid hormone and bone turnover markers, but effects on bone density and fracture risk remain unproven
Safety Information
Potential Side Effects
{"Diarrhea (osmotic effect of phosphate salts)","Hyperphosphatemia risk in kidney impairment"}
Contraindications
{"Chronic kidney disease",Hyperphosphatemia,"Hyperparathyroidism without supervision"}
Drug Interactions
- Aluminum/magnesium antacids bind phosphate (cause deficiency)
- ACE inhibitors/ARBs raise phosphate retention risk in CKD
Pregnancy & Breastfeeding
Pregnancy: likely_safe
Breastfeeding: likely_safe
Dosage Guidelines
Dosage Used in Studies
Consult healthcare provider
Forms Compared
Food & Timing
With food if supplemented.
Medical Disclaimer
The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.
Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.