I've been getting dizzy. For the past few days, whenever I sit up too fast from lying down or if I move too quickly, I get that odd out-of-balance feeling and feel like I may fall over - just for a second or two. Curious as to whether this phenomenon was diet or life-threatening-malady related, I did what anyone would do: I Googled it.
"dizzy, low carb diet" yielded the following diagnosis:
Orthostatic hypotension, also known as posutral hypotention, orthostasis, and colloquially as head rush or dizzy spell, is a form of hypotension in which a person's blood pressure suddenly falls when the person stands up or stretches. - Wikipedia.
I also found a number of forum discussions on various low-carb diet websites discussing this very problem. Some say it's sodium related. Some say it's calorie related. Some say it's fat related...and so on. But the idea that this has something to do with a lack of sodium makes the most sense to me - and it fits.
I have always had low blood pressure. I'm not on medication for it, but I usually come in around 90/50 when I'm at the doctor's office - and this is often after my morning coffee. I am on a very low calorie and low carb diet at the moment which, on its own will help the body rid itself of a lot of water. And, since I use salt very sparingly on my food, and drink two quarts of homemade iced green tea a day, I think that perhaps I do have a sodium deficiency.
Think about it, people with high blood pressure are asked to reduce their sodium intake. This is because sodium causes the body to hold excess water intended to flush the excess salt from the body, thus thickening blood volume resulting in increased pressure within the circulatory system. If I'm flushing out all of my sodium and not consuming enough of it, my blood volume will actually decrease.
So, I'm going to up my salt intake over the next few days and see if the spells decrease or disappear altogether. Stay tuned. I'll get you an update this weekend - oh, and will post my month 1 pics from the cut I'm on. Not sure there's a huge change, but we'll see when I take pics and measurements on Friday.