Human Anatomy, Physiology, and Medicine. Anything human!
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I know that the symptoms for diabetes are excessive urination, incressed thirst, tirednees, weight loss etc, but i don't know why each of these symptoms occur. Is it because the glucose is not being taken up by the cells?
Basically yes. Normally you don't have glucose in your urine, but diabetic people have. That's why patients need a lot of water (therefore needs to urinate more often) to excrete excess glucose from the body (you know glucose should be dissolved in water, you can not get rid of them in crystal form ). Diabetic people loose weight because, cells don't have glucose to use, therefore they start to use lipids.
PS: There are many factors that can lead to diabetes. I mean, in some diabetics, pancreas secretes normally, but some organs have problem about getting it.
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1-Excessive thirst and increased urination
Excessive thirst and increased urination are classic diabetes signs and symptoms.When you have diabetes, excess sugar (glucose) builds up in your blood. Your kidneys are forced to work overtime to filter and absorb the excess sugar. If your kidneys can't keep up, the excess sugar is excreted into your urine along with fluids drawn from your tissues. This triggers more frequent urination, which may leave you dehydrated. As you drink more fluids to quench your thirst, you'll urinate even more.
You may feel fatigued. Many factors can contribute to this. They include dehydration from increased urination and your inability to function properly, since it's less able to use sugar for energy needs.Weight lossWeight fluctuations also fall under the umbrella of possible diabetes signs and symptoms. When you lose sugar through frequent urination, you also lose calories. At the same time, diabetes may keep the sugar from your food from reaching your cells — leading to constant hunger. The combined effect is potentially rapid weight loss, especially if you have type 1 diabetes.
Diabetes symptoms sometimes involve your vision. High levels of blood sugar pull fluid from your tissues, including the lenses of your eyes. This affects your ability to focus.
Last edited by JackBean on Thu Apr 05, 2012 1:10 pm, edited 1 time in total.
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Under normal circumstances, blood sugar leaves the blood in the kidneys and must be reabsorbed early in the urine-forming process. If blood levels are too high, sugar gets past that step and changes the osmotic balance of the liquid. That affects the later stage of reabsorbing water from it - urine retains more water, increasing bladder fill and taking too much water with it.
Insulin causes sugar to be taken from the blood and stored, and later glucagon will get it released as needed. If it's not stored, it gets used and lost, and later, when needed, isn't available. Lack of the quick energy of sugar can cause fatigue, and accessing other energy sources - fats and proteins - can cause weight loss.
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