This is something I've been noticing lately. Background: I've been paleo in diet for about 9 months, only in the last 1-2 months have I also primal-ized my lifestyle and begun to exercise more regularly (following general advice from Mark Sisson).
I hydrate well, always have, but I've been noticing in the last few weeks that no matter how much water I drink that day or right after exercise, my pee is a really dark yellow. There's nothing wrong aside from that, except maybe I have more energy than usual :-), but I just find it so odd and maybe slightly alarming.
For reference, the kinds of workouts I do vary, but are sometimes yoga, bikram yoga, 20-30 min sprint intervals running or on the elliptical, and body weight exercises. When I work out, whatever I'm doing, the total time is 60 to 90 minutes of pretty intense work with minimal rest. I don't hydrate while exercising because it gives me cramps.
Any ideas on what's going on here? I had bloodwork done a few months ago to test for Crohn's and all the kidney stuff was normal, so I don't really think it's something to be scared of, but what could it be?
Collect a post workout urine sample and have your doctor run a urinalysis. If it is dipstick positive for blood but no red blood cells are seen on microscopic exam, then you are spilling myoglobin and may have rhabdomyolisis. If red blood cells are seen then you need to see a urologist to make certain you do not have pathology in the urinary tract. If there is no blood on dipstick or microscopic exam, you are probably just concentrating your urine.
If you have findings of rhabdo and are appropriately conditioned (not a weekend warrior), you may have a genetic disorder that makes you prone to this. Glucose-6-Phosphate dehydrogenase deficiency if you are of African or Middle Easter dissent or certain glycogen storage disorders would be possibilities.
Hope my comment helps. Good Luck.
Urine that is not discolored, but only a darker yellow, means mild (probably very mild) dehydration. Even if you're well hydrated to begin with, 90 minutes is along time to go without drinking.
Also, most people have elevated ketone bodies after exercise, especially low-carbers, but ketones usually discolor urine.
As others have said, rhabdomyolysis discolors urine, as well.
i don't know much about about it, but like most things it seems to exist on a scale. a little is not such a big deal, and a by product of intense exercise, alot is serious and asking for trouble.
hope this helps
Drink more water. It's really that simple.
I find I have to drink at least twelve 8-oz glasses a day to stay hydrated on paleo. With exercise, a bit more. Drink it when you're not really thirsty (or don't think you are) and you'll soon notice the problem disappear.
Are you supplementing with heavy D3? If so, you might have small kidney stones that are causing blood in the urine. A friend and I both experienced post exercise haematuria after 3 mnths of supplementing with 5,000-10,000IU of D3 daily. Doctor said excess Vit D3 can cause kidney stones.
i noticed this symptom myself. i do not think it is a problem. i do bikram yoga and even though i drink through out the class and after. i dont pee for at least 6-8 hours after class. it is usually concetrated yellow. i have this idea i am getting rid of shit and toxins during the class and it gathers up until my bladder is full again. cant help but feel it is okay and not to worry but i dont know shit.
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