Introduction

Phosphorus is an essential mineral that plays a critical role in bone formation, energy production, cell repair, and acid–base balance. It is the second most abundant mineral in the human body after calcium.

What Is Phosphorus?

Phosphorus is a major mineral found in bones, teeth, and every cell of the body. It is a key component of DNA, RNA, and ATP (the body’s energy currency).

• Type: Essential mineral
• Main role: Energy metabolism and bone structure
• Storage: Bones and teeth

How Phosphorus Works in the Body

Phosphorus works closely with calcium and Vitamin D to maintain strong bones and teeth while supporting cellular energy production.

• Forms bones and teeth with calcium
• Plays a role in ATP production (energy)
• Supports cell membrane integrity
• Helps maintain normal acid–base balance

Sources of Phosphorus

• Milk, curd, and dairy products
• Meat, poultry, and fish
• Eggs
• Whole grains
• Legumes and lentils
• Nuts and seeds

Phosphorus Deficiency

Phosphorus deficiency is rare but may occur in cases of severe malnutrition, alcoholism, or certain medical conditions.

Possible deficiency symptoms include:

• Bone pain and weakness
• Fatigue and low energy
• Muscle weakness
• Loss of appetite
• Weakened immunity

Recommended Intake of Phosphorus

• Adults: 700 mg/day
• Teenagers: 1250 mg/day
• Pregnancy & breastfeeding: 700–1250 mg/day

Most people meet phosphorus needs through diet alone.

Forms of Phosphorus

• Phosphate salts (calcium phosphate, sodium phosphate)
• Organic phosphorus (naturally occurring in foods)
• Food additives (phosphates in processed foods)

Benefits & Uses

• Strengthens bones and teeth
• Supports energy production
• Maintains cell structure and repair
• Supports kidney and nerve function
• Helps regulate acid–base balance

Safety, Side Effects & Precautions

• Generally safe at recommended levels
• Excess intake may disrupt calcium balance
• High phosphate intake may affect kidney health
• Limit processed foods high in phosphate additives

Special Populations

• Kidney disease patients: Often need phosphorus restriction
• Elderly: Balance with calcium and Vitamin D
• Athletes: Important for energy metabolism
• Malnourished individuals: May require monitoring

Frequently Asked Questions

What does phosphorus do in the body?

Phosphorus supports bone health, energy production, and cellular repair.

Is phosphorus the same as calcium?

No. They work together but have different roles in the body.

Can phosphorus be taken daily?

Yes. Daily intake through food is essential and usually sufficient.

Can too much phosphorus be harmful?

Yes. Excess intake, especially from processed foods, may harm bone and kidney health.

Best way to get phosphorus?

From natural foods such as dairy, legumes, whole grains, and proteins.