Phosphate
MineralFoundational
Half of ATP, part of every cell membrane, and the other half of bone mineral.
At a glance
Essential · rarely short
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Stores cellular energy
The "P" in ATP and phosphocreatine.
why ↓
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Builds bone
Pairs with calcium to form bone mineral.
why ↓
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Builds DNA and membranes
Part of every cell's genetic code and outer wall.
why ↓
Strong human evidence
How to take it
- About 700 mg a day, easy to get from food
- Beef, chicken, salmon, dairy, lentils, pumpkin seeds
Watch out
- Most excess comes from phosphate food additives
- Kidney disease makes high phosphate a real concern
Signs you're low
- Weakness, bone pain (rare)
The Research
Mechanisms, studies and evidence grades for each claim above.
What it is
Phosphate (PO₄³⁻) is the biologically active form of phosphorus.
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Why it matters
- Energy — forms ATP and phosphocreatine, central to energy transfer (see Creatine)
- Structure — part of DNA/RNA and cell membranes (phospholipids)
- Bone — combines with calcium to form hydroxyapatite (see Calcium)
- Buffering — helps regulate acid-base balance
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Intake
RDA is roughly 700 mg/day for most adults; needs vary with growth, pregnancy/lactation, and clinical kidney/bone conditions.
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Balance notes
Phosphate is tightly linked to calcium, vitamin D, PTH, and kidney function. A lot of "too much phosphate" concern in practice comes from phosphate food additives and from reduced kidney clearance rather than whole-food intake.
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Deficiency effects
Uncommon with adequate diet; can occur with refeeding syndrome, alcoholism, antacid overuse, or certain disorders — may cause weakness, bone pain, and impaired energy metabolism. High phosphate is a key concern in chronic kidney disease.
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Top foods
- Beef
- Chicken
- Salmon
- Yogurt
- Milk
- Cheese
- Lentils
- Pumpkin seeds
- Oats
- Barley
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