Uploaded March 2026 | Updated September 2026, 2 weeks ago

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In this Huberman Lab Essentials episode, I explain how salt (sodium) affects mental and physical performance, as well as cellular health. I describe how the brain monitors sodium levels to regulate thirst and fluid balance, and why salt needs can vary depending on activity level, stress, blood pressure, and diet. I also explain how to determine the right sodium intake for your individual needs and discuss why some people may benefit from increasing salt and other electrolytes.

Show notes: go.hubermanlab.com/jiFQJYv

Watch more Huberman Lab Essentials: youtube.com/playlist?list=PLPNW_gerXa4OGNy1yE-W9IX-tPu-tJa7S&si=a1_sA7rUT-fE0OM5

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*Timestamps*
00:00:00 Salt
00:00:37 Brain & Monitoring Salt
00:02:33 Thirst, Osmotic Thirst & Salt
00:05:35 Hypovolemic Thirst & Blood Pressure
00:06:59 Fluid Balance, Kidney & Urine Regulation
00:10:13 How Much Salt Do You Need?, Blood Pressure, Dizziness & Postural Syndromes
00:15:49 Replenish Salt for Performance, Tool: Galpin Equation & Exercise
00:17:35 Stress & Craving Salt
00:19:18 Electrolytes: Magnesium & Potassium; Low Carbohydrate Diet
00:22:07 Salt & Sweet Taste, Sugar Cravings, Processed Foods
00:26:26 Finding Your Ideal Salt Intake, Tool: Unprocessed Food Diet
00:28:14 Neurons, Salt & Action Potentials; Ingesting Too Much Water
00:30:15 Recap & Key Takeaways

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