You should not drink salt water (like seawater) because it dehydrates you, strains your kidneys, and can quickly make you very sick or even be life‑threatening in survival situations.

Key point: which “salt water”?

When people ask “can you drink salt water,” they usually mean one of three things:

  • Ocean/sea water (very salty, about 3.5% salt)
  • Heavily salted water used for “cleanses”
  • Lightly salted drinking water (like electrolyte drinks)

The answer is very different for each.

Ocean / sea water

Drinking ocean water is unsafe.

  • Seawater has far more salt than your kidneys can safely excrete, so your body pulls water out of your cells to dilute and remove the excess salt, making you more dehydrated, not less.
  • This can cause intense thirst, headache, confusion, nausea, vomiting, and eventually kidney failure, seizures, coma, or death if continued.

Survival rule of thumb: in an emergency at sea, do not drink seawater. It shortens survival time rather than extending it.

“Salt water cleanses” and salty home remedies

Online trends sometimes suggest:

  • “Drink warm salt water to detox or lose weight”
  • “Seven‑day salt water cleanse”

These are risky if the water is very salty or consumed often.

  • High salt intake is linked with high blood pressure, greater risk of stroke, kidney problems, and can worsen conditions like heart disease or kidney disease.
  • Large volumes of salty water can cause diarrhea and fluid loss, so the “weight loss” is mostly water loss and dehydration, not real fat loss.

Anyone with heart, kidney, or blood pressure issues should be especially cautious and talk to a doctor before doing any kind of salt‑water “hack”.

Lightly salted water / electrolytes

Very lightly salted water (for example, a pinch of salt in a large bottle, or properly formulated electrolyte drinks) is a different story.

  • In small amounts, lightly salted water can help replace sodium lost through heavy sweating and may support hydration, especially for athletes or people working in heat.
  • The problem appears when the salt concentration or total daily sodium gets too high: that increases blood pressure risk, water retention, and long‑term cardiovascular and kidney strain.

Typical safe‑use principles:

  1. Use normal sports/electrolyte drinks or medical oral rehydration solutions (ORS), not DIY very‑salty mixes.
  2. Keep total daily sodium within medical guidance (often under about 2,300 mg/day for healthy adults, and less for people with hypertension, unless a doctor says otherwise).
  1. If you have high blood pressure, kidney disease, heart failure, or are on diuretics, ask your doctor before adding extra salt to drinks.

Mini FAQ and forum‑style angles

“People online say they drink warm salt water every morning and feel great. Is that safe?”

  • Some people may feel short‑term benefits like easier bowel movements or less bloating, but the long‑term risks of extra sodium (higher blood pressure, kidney strain, bone effects) are real, especially if this becomes a daily habit.

“What about special ‘how to drink salt water safely’ guides?”

  • Many guides admit that drinking salt water can be dangerous and should only be considered in very limited, small amounts and with proper preparation, often as a last resort in survival contexts.
  • Even then, they stress that fresh, clean water is always the safer and preferred option.

Bottom line and safe practice

  • Do not drink seawater or very salty water. It dehydrates you and can be life‑threatening.
  • Avoid extreme salt‑water “cleanses” or trends , especially if you have blood pressure, heart, or kidney issues.
  • Lightly salted water/electrolyte drinks can be useful in moderation, but they still count toward your daily sodium load, so medical conditions and total diet matter.
  • When in doubt, stick to fresh water and medically approved rehydration solutions, and talk to a healthcare professional before making salty water a routine.

Information gathered from public forums or data available on the internet and portrayed here.