I'm currently using the Slow Carb Diet to lose some weight. I find that it works well, but I plateau often. I'm trying (and succeeding but ever so slowly) to get under 15% body fat. Been doing it a while and it's fine.
I find that if I'm dropping weight I get light-headed. Well, it's not really the same feeling as "must eat now" so I'll call it 'fuzz-headed'. For instance, on cheat day (Sat), I'll feel fine. Likewise Sunday. But by Thursday (today) I feel sorta light headed / spacy / fuzzy. I'd say it is similar to being half hung over, half low blood sugar.
Important note: I doubt it's blood sugar. I've tested my blood sugar (with a strip kit) about 8 times when I've had this feeling and it's always been in the 95-130 range. My appetite doesn't seem to have anything to do with it -- my hunger levels are usually pretty low when I'm experiencing this fuzz-head feeling. Also, I don't think it's hydration, judging by urine color. I drink about 48oz of water (coffee, tea) between 7AM and 5PM and never feel thirsty. I have talked to a Dr about this and he tested my blood... something... levels. Slightly elevated creatinine (sp?) but all else normal. He thought the creatinine wasn't anything to be concerned about.
A typical day looks like this:
- 7AM: protein shake, 45g protein, 16 oz water, flax seed
- after 7AM: 2 cups coffee, black
- 9:30AM: fuzzy headed feeling starts about her
- 10AM: breakfast: 4-6 oz pork or chicken, 1/2c lentils, 1/2c spinach, 2 eggs
- 2PM: lunch: 1.5c slow carb chili (kidney beans, beef, vegetables)
- 5PM: fuzzy headed feeling has been with me from 9:30 until now.
I've tried attacking this issue with vitamins (Vit D or a multivitamin), no effect. I do find it will go away if I get a solid half hour of aerobic activity like hill-walking or swimming. Large doses of caffeine will clear it up as well (20 oz coffee). I want to avoid caffeine because it disrupts my sleep. Getting an hour in at the gym in the morning is difficult.
My questions: could this be related to the weight loss? Like as I'm shedding fat there's some sort of byproduct that gets stuck in my blood and my kidneys aren't filtering it out well? Could this be a specific nutrient that I'm not getting enough of (esp. something that a typical multi wouldn't take care of)?
I've asked about this on the SCD forums in the past but really didn't get a good answer. Hopefully the SE network will give me better results.