Ideas in this flowchart

• Phosphorus: sources, intake, functions, deficiency, and safety
• Dietary sources include salmon, yogurt, turkey, chicken, beef, and lentils.
• The recommended intake for adults is 700 mg/day.
• Phosphorus is a structural component of bones, cell membranes, DNA, RNA, and ATP.
• Phosphorus deficiency
• Deficiency can cause bone loss and weak bones.
• Older adults and alcoholics are at risk of deficiency.
• No toxicity is specified.
• The upper limit is 3,000 mg.