How much Phosphorus should I take daily?
Pro Research Analysisby 
Searched over 200M research papers
Consensus Meter
Recommended Daily Phosphorus Intake
Phosphorus Intake Guidelines for Adults
The Recommended Dietary Allowance (RDA) for phosphorus in adults aged 19 years and older is 700 mg per day. This recommendation is based on maintaining a balance between calcium and phosphorus in the body, as both minerals are present in approximately equimolar amounts.
Current Phosphorus Consumption Trends
Despite the RDA being set at 700 mg/day, the average daily intake of phosphorus among adults in the United States significantly exceeds this amount. Studies have shown that the mean daily intake of phosphorus is often over 1000 mg/day, with some reports indicating an average intake of around 1400 mg/day. This high intake is partly due to the widespread use of phosphate additives in processed foods, which can increase phosphorus intake by as much as 1 gram per day.
Health Implications of High Phosphorus Intake
Risk of Type 2 Diabetes
High dietary phosphorus intake has been associated with an increased risk of type 2 diabetes. In a large cohort study, women with higher phosphorus intake had a significantly higher risk of developing type 2 diabetes compared to those with lower intake. This suggests that excessive phosphorus consumption may have adverse metabolic effects.
Chronic Diseases
Excessive phosphorus intake has also been linked to other chronic health conditions, including cancer, obesity, and hypertension. The rapid absorption of phosphorus and the subsequent hormonal responses can lead to metabolic abnormalities that may contribute to these diseases.
Phosphorus in Medications
For patients with chronic kidney disease (CKD), phosphorus intake from medications can be a concern. Although the phosphorus content in medications is generally low, it can vary significantly between different brands and formulations. This variability necessitates careful consideration by healthcare providers to avoid excessive phosphorus intake in CKD patients.
Conclusion
While the RDA for phosphorus is 700 mg/day for adults, actual intake often exceeds this amount, leading to potential health risks. It is important to monitor and manage phosphorus intake, especially from processed foods and medications, to prevent adverse health outcomes. Further research is needed to fully understand the implications of high phosphorus intake and to refine dietary recommendations accordingly.
Sources and full results
Most relevant research papers on this topic