Recommended daily intake of phosphorus
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Recommended Daily Intake of Phosphorus for Adults
The recommended daily intake of phosphorus for adults is generally set at 700 mg per day for individuals aged 19 years and older in the United States and by several international authorities Borgi2018Products2015. The European Food Safety Authority (EFSA) also suggests an adequate intake (AI) of 700 mg/day for adults, including pregnant and lactating women, based on the relationship between calcium and phosphorus in the body . However, another EFSA report proposes a slightly lower AI of 550 mg/day for adults, reflecting different approaches to calculating needs . For infants and children, the recommended intake ranges from 160–800 mg/day depending on age Products2015Tetens2015.
Actual Phosphorus Intake in Populations
Despite these recommendations, actual phosphorus intake in many countries is much higher. In the United States, average daily phosphorus intake exceeds 1,000 mg for all age groups, with some analyses showing intakes over 1,400 mg/day Borgi2018McClure2017Fulgoni2021. In Sweden, the average intake is about 1,800–2,000 mg/day, which is nearly three times the recommended amount . Similarly, studies in Germany report average intakes around 1,338 mg/day, also well above recommendations . These high intakes are consistent across both healthy adults and those with chronic kidney disease .
Main Dietary Sources of Phosphorus
The main sources of dietary phosphorus are grains, meats, dairy products, and processed foods. In the United States, grains are now the largest source, followed by meats and milk products McClure2017Fulgoni2021. In Sweden and Germany, dairy, cereals, and meats are the top contributors Andersson2018Trautvetter2018. Processed foods often contain added inorganic phosphorus, which is more easily absorbed by the body and can significantly increase total intake Andersson2018Uribarri2003Fulgoni2021.
Health Implications of Excess Phosphorus Intake
Excessive phosphorus intake is a concern because it is linked to increased risks of cardiovascular disease, chronic kidney disease, osteoporosis, and, as recent research suggests, type 2 diabetes Mancini2017Andersson2018Uribarri2003. High phosphorus intake can lead to elevated serum phosphorus levels, which are particularly dangerous for individuals with kidney disease Uribarri2003Salomo2017. Studies have shown that most people in Western countries consume much more phosphorus than recommended, raising concerns about long-term health effects Andersson2018Trautvetter2018McClure2017+1 MORE.
Conclusion
The recommended daily intake of phosphorus for adults is 700 mg, but actual intake in many populations is much higher, often exceeding 1,000 mg per day. The main sources are grains, meats, dairy, and processed foods with added phosphorus. Consistently high phosphorus intake may increase the risk of several chronic diseases, highlighting the importance of monitoring and possibly reducing phosphorus consumption in the general population Borgi2018Products2015Tetens2015+7 MORE.
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