Everyday fixes
Salt, Potassium and Puffiness: The Kitchen Fix
Three quarters of the sodium most people eat was added before the food reached their kitchen. That is where the fix lives. 🧂
Key takeaways
- The salt shaker is a minority of your intake.
- Bread is often the single biggest contributor.
- Potassium promotes sodium excretion — but not if you have kidney disease.
- Effects show up within about a week if sodium was the driver.
Why sodium causes swelling 💧
Your body holds sodium and water in a fixed ratio to keep blood sodium concentration stable. Eat more sodium, and your body retains proportionally more water to dilute it. That extra water sits in the bloodstream and the tissue spaces.
In someone with healthy veins and a modest intake this is handled invisibly. In someone with leaky vein valves standing for eight hours, the extra fluid load lands exactly where you do not want it.
Where the sodium actually is 🔍
- Bread. Usually the single biggest contributor in a Western diet — not because it is especially salty, but because people eat a lot of it.
- Processed and cured meat. Bacon, ham, sausages, deli slices.
- Cheese, particularly hard and blue varieties.
- Sauces and condiments. Soy sauce, ketchup, stock cubes, gravy granules, jarred pasta sauce, dressings.
- Ready meals, tinned soup and takeaway. A single restaurant main can carry most of a day’s sodium.
- Breakfast cereal and savoury snacks.
Health authorities broadly suggest keeping sodium under about 2,300 mg a day, with a lower target nearer 1,500 mg for people with raised blood pressure. Average intakes sit well above that.
Potassium: the other half 🥑
Sodium and potassium work against each other. Higher potassium intake promotes sodium excretion through the kidneys and relaxes blood vessel walls. Most people eat too little. Good sources: potatoes with skin, beans and lentils, bananas, avocado, spinach, tomatoes, yoghurt, oranges, dried apricots.
⚠️ One important exception
If you have kidney disease, or take an ACE inhibitor, an ARB, or a potassium-sparing diuretic such as spironolactone, do not increase potassium deliberately or use potassium-based salt substitutes without medical advice. High blood potassium is dangerous.
Changes that actually stick 🍽️
- Read one label a week. Pick a staple and compare two brands. Sodium between near-identical products often differs two or three fold.
- Cook one more meal at home. Not seven. One.
- Rinse tinned beans and vegetables — removes a meaningful share for thirty seconds of effort.
- Replace salt with acid and aroma — lemon, vinegar, garlic, pepper, herbs, chilli.
- Add one potassium-rich food a day.
- Give it two weeks. Taste receptors adapt; food that seems bland on day three tastes normal by day fourteen.
And drink normally. The instinct to drink less when puffy backfires — mild dehydration prompts the body to conserve sodium and water, worsening retention.
Measure it: ankle circumference at a fixed point, same time each evening, weekly. If a fortnight of lower sodium does nothing, sodium was not your driver — useful information before spending money on anything else. ✅