Unfortunately, I have been quite fatigued at the same time. (And that is a curious combination: to have an increasingly alert mind and fatigued body.) Although I've been going to the gym (pretty) regularly, I was having to reduce the amount I lifted, and nap when I came home; I was having dizzy spells, and woke up tired.
Over at the LowCarbFriends bulletin board, for example, Vanessa120 captured my situation in a nutshell: "If you are low-carbing and feel fatigue, headaches, muscle weakness, dizziness, mood swings, lethargy, decreased mental alertness...you need salt."
Except for the mood swings, that was me all over. Quoting The Art and Science of Low Carbohydrate Living (a new low-carb text by Jeff Volek & Stephen Phinney) she stated, "High carbohydrate diets make the kidneys retain salt, whereas a low carbohydrate intake increases sodium excretion by the kidney. Salt and water are more efficiently excreted, which is a good thing as long as you
maintain an adequate minimum sodium intake. Ignore this lesson and you are likely to suffer."
I've never liked the taste of salt, so don't usually add it to food (though that's changed a bit as I've aged--must have blown out some tastebuds somewhere along the line). She suggests consuming sea salt. I don't have any in the house, so I've been licking table salt off my palm, and chasing it with water.
I felt perkier after consuming the salt, though still a bit tired. I think I must be in some kind of sodium deficit, and need to remember (as Vanessa120 and others have pointed out) that I need to salt each of my meals (and keep sucking down the water).
Salting the Brain
|Go to Deans' site to learn the |
significance of this here brain nerve
And the salt connection?
She gives a chunk o' science, but in a nutshell: "all of [the drugs] work (effectively) as insulators in the brain, decreasing the ability of the neurons to send out out-of whack sodium messages leading to neurotoxic calcium overload." She posits that ketogenic diets may produce a similar and positive effect.
So there's a curious thing: low-carbing pushes sodium (and water) out of the body at much greater rates than high-carbing, yet somehow does a better job of keeping electrolytes and neurotransmitters on track (if, I believe, the appropriate sodium and water levels are maintained).
Although my mood has improved as I've increased the fat and reduced the carbs I eat, perhaps I'm on the road to an even better mood state--if I can remember the salt.