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Can Too Few Carbs Cause High Blood Sugar

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Will Low-carb Diets Cause Blood Sugar Levels To Drop?

Video of the Day If you're accustomed to eating a very high-carb diet and suddenly switch to a very low-carb diet, you could experience rather dramatic drops in your blood sugar during the first few days or weeks of your transition. This low blood sugar can cause notably uncomfortable side effects and intense cravings. Carbs and Blood Sugar Your body converts consumed carbohydrates into glucose, a type of sugar. When the glucose enters your bloodstream, it leads to an increase in your blood sugar level. The pancreas produces insulin in response to spikes in blood sugar, which helps your body store the sugar for energy. This insulin release subsides when your cells absorb the sugar and your levels stabilize. In a healthy body, the surge of blood sugar and insulin is relatively moderate and keeps you evenly motoring through your day. When you eat lots of carbohydrates, your body's blood sugar remains consistently high and your system constantly pumps out insulin. This chronic elevation of blood sugar and release of insulin causes inflammation, an increase in fat storage and an inability to burn stored fat. Chronically high blood sugar levels increase your risk of disease, including h Continue reading >>

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  1. lucullus

    low carb causing my fasting blood sugar to rise?

    A few months ago I had a fasting blood sugar test which showed signs of pre diabetes. I went on a strick diet for 4 weeks and lost 22lbs. I had another checkup and they told me there was no signs of diabetes. HBA1C was 5.4 and fasting blood was 99. I assumed all was well and went back to normal diet. Three weeks later I noticed my fasting level where 110-125 over a few days. I went straight on to a low carb restricted calorie diet, that's about 12 days ago.
    I have been consuming about 1400-1600 calories with around 130g carbs. Nearly All foods being low glycemic index. I thought I would add fasting days to my diet also. So I had one day on 650 calories. I have been doing about 1.5 to 2 hours of walking per day, plus either 1 hr bike or 1 hour gym. Since the fasting day (5 days ago) my fasting blood sugars have risen quite dramatically. My fasting blood sugar is averaging 145 and before bed I have scores as high as 175. I have lost around 12 lbs in the last 12 days. My BMI is currently 26.7 down from 30.2. My waist measurement is less than half my height 191cm versus 94 cm
    It appears that by loosing approx 34 lbs in total. I have managed to go from pre diabetic to full diabetes. I am very concerned can anyone give we a reason why my blood sugars are rising when I am eating such a low calorie low carb diet. It like my pancreas just decided to stop producing insulin. When a few weeks into the start of first part of my diet it was producing normal amounts. 72.3 pmol/l. My wife has said my breath has started to smell a bit worse last few days?

  2. Nan OH

    Hello and welcome
    For many people 130 grams of carbohydrates is not a low carb diet. Your extra fasting may be causing your liver to release stored glucose and that is raising your numbers. For me, if my Blood Glucose Level is 150 or higher I can not do heavy work outs. Well I could not, my health has changed due to other conditions and I can no longer work out at all.
    It is debated whether there is actually a pre-diabetes. When you notice that carbohydrates are giving you problems, they will almost always give you problems. We can control but we can not stop our inability to use our bodies' insulin.
    How often are you testing? I know test strips are expensive but since you are trying to figure this out you may want to test when you get up, one hour and two hours after each meal and then at bed time.
    Has your doctor run any test to rule out the possibility that you could be a Type One diabetic?

  3. AnnC

    You've made a lot of changes to your diet in the past 12 days, without waiting for each change to take effect. If eating the first 'strict diet' brought your HbA1c back into non-diabetic ranges while maintaining normal insulin production, is there any reason why you can't go back to eating that diet?

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