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The UK average potassium intake (3,000–3,200 mg/day) falls below the recommended 3,500 mg/day. Potassium regulates blood pressure, muscle function, and fluid balance. Best dietary sources: white potatoes (740 mg/100g), dried apricots (1,160 mg/100g), lentils (369 mg/100g), bananas (358 mg/100g), and avocado (485 mg/100g). This article covers sources and context for weight management.