I have written about the electrolytes salt and potassium on several occasions, see here and here and here. I have also written about how thirst is an indicator of electrolyte balance or imbalance, see here. In the video, we discuss salt thirst from a different perspective, and sodium requirements with different diets. US Dietary Guideline recommends 2300 mg sodium (sodium is 40% of salt) for the general population and 1500 mg sodium for the elderly and those with heart disease. This is in contrast to research showing that such low sodium actually increases mortality. Accordingly, the ideal amount is around 3500-4500 mg sodium a day for all populations. Another study found that 4000 – 6000 mg sodium was ideal for non-hypertensive individuals.
Salt, Edema, Thirst, Insulin, and Hydration
In diets more heavily focused on animal proteins, managing hydration can become difficult without proper electrolyte support. Edema, or swelling, is a common symptom of improper electrolyte balance and dehydration. Because these diets reduce circulating insulin, and as a result also sodium and water levels, the body becomes dehydrated. To conserve water and salt, the body stores it in the tissues, leading to edema. Rather than reducing water and salt, an increase in both is required to prevent edema. Thirst may also follow, but drinking water is often an inappropriate response.
I also cover protein to some extent in this interview. Much is yet to be clarified about the amount of protein that is ideal. I have written about protein before, you will find it here.
I hope you enjoy this video discussion.
Keto & Carnivore: Electrolytes, Water Retention & More
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