Probably not. A couple of recent studies showed that the healthiest sodium intake is between 10 and 15 g/day, which works out to 4-6 g/day of sodium chloride. That is far more than most government recommendations; int fact, the U.S. recommendation is unhealthily low.
Sodium is the easiest electrolyte to control, and keeping intake in the right range also helps the body to regulate calcium, magnesium, and potassium. While I firmly believe that it should be possible (in principle, at least) to get all our nutrients from our food, some people have metabolic irregularities that require supplementation.
The question of what constitutes proper hydration is a vexed one. Dr. Tim Noakes, the researcher and matathoner, was the one who originally started saying that we needed copious amounts of liquid, and sport drink manufacturers took the advice and overdid it, until runners started collapsing and even dying from over-hydration during races. Dr. Noakes has had to apologise and change his advice to âdrink to thirst.â
I have actually seen advice to the effect that once we start feeling thirsty we are dangerously dehydrated and on the point of death. This is bollocks. Drink if youâre thirsty, and stop drinking when your thirst is quenched. Most peopleâs body signals are sufficient to let us know when we need liquid. However, it is true that some people tend to experience thirst as hunger, so it is always helpful to drink something when we feel hungry, to see if that meets our need.
These forums have two dogmas (or âdogmataâ, as Richard Morris puts it):
- Show me the science.
- Figure out what works for you.