I am sitting in a human bio lecture and my lecturer is saying that it is ultimately very dangerous to be low/zero carb because the using up of glycogen from protein creates ammonia which is damaging to the liver and kidneys. And that the brain requires 99% of energy in the form of glucose & potatoes should be eaten over steak.
Anyway I know low carb is possible (Inuits, Masai, Sherpahs), but I don't know how they do it and remain healthy in terms of biochemistry. Anyone know? Would love to lay out paleo to him and the class.
"If we’re not supposed to eat animals, how come they’re made out of meat?" - Tom Snyder, talk show host
I eat no carbs for up to 4-5 days with no problems and refeed on the weekends.
Gluconeogenesis - Wikipedia, the free encyclopedia
Ketosis - Wikipedia, the free encyclopedia
"If the diet is changed from a highly glycemic diet to a diet that does not provide sufficient carbohydrate to replenish glycogen stores, the body goes through a set of stages to enter ketosis. During the initial stages of this process, blood glucose levels are maintained through gluconeogenesis, and the adult brain does not burn ketones. However, the brain makes immediate use of ketones for lipid synthesis in the brain. After about 48 hours of this process, the brain starts burning ketones in order to more directly use the energy from the fat stores that are being depended upon, and to reserve the glucose only for its absolute needs, thus avoiding the depletion of the body's protein store in the muscles."
Yanked from wikipedia, no clue how accurate it is, but meh.
Believe nothing, no matter where you read it, or who has said it, no matter if I have said it, unless it agrees with your own reason and your own experience.
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I've shaken hands with a raccoon and lived to tell the tale
SW: 220- 225 pounds at the beginning of January
CW: 180 pounds
Goals for 2012: Lose a bit more fat and start a serious muscle and strength routine
Our body does not require carbohydrates at all, you know. They are not necessary to the function of the human organism. So there is no problem going long term low carb.
Cut out fats or protein though and you will be in deep doo doo.
A good book to read is Living the Low Carb Life by Jonny Bowden, try your library.
Read Gary Taubes article "What if It's All Been a Big Fat Lie?" from the NY Times.
& here are a few more references for you.
Health Benefits of a Low-Carbohydrate, High-Saturated-Fat Diet by Donald W. Miller, Jr., MD
How to Keep Feces Out of Your Bloodstream about poisoning our systems with grains
Low-Carb Diet Reduces Inflammation And Blood Saturated Fat In Metabolic Syndrome & Low-Calorie Diet May Be Harmful for Bowel Disease Patients in ScienceDaily
Ammonia is turned into urea and is excreted by the body in urine.
My mind is shifting on this. While the body can function without carbs and even thrive for a while, I'm not entirely sure that long term optimum health is achieved on vlc. Optimum health is not the same as survival.
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This is an interesting discussion, and i think it's great that those in this community seem to examine all the options and share their personal experiences for others to consider. I have seen athletes thrive on the short term being "ketone adapted', but most ended up feeling the need to go back to carbs for fuel. It didn't seem to matter what sports they were involved in (bodybuilding, triathlon, powerlifting, track and field, etc). I am very interested in this topic, as I do train with some "primal" athletes, but not exactly sure of their macro ratios yet.
I've been using fat for fuel almost exclusively for 8 months or so. I don't know if this counts as long term but it's suiting me just fine.
I only add in the carbs after heavy lifting to refill muscle glycogen. Adding carbs after lifting is relatively new to my routine, and I felt great before upping the carbs. It's not a lack of energy that has me eating them, but better recovery and size/strength gains.
I'm not sure if I'm in the minority, but I actually get a slight euphoria feeling in ketosis.
Apparently, my body is making all of the day-to-day sugars it needs on normal days.
Note: I'm not exactly no-carb, as on non-heavy lifting days I do eat veggies, but it's almost always under 50g