Tests for diabetes should be done only if one has symptoms of diabetes.
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High blood sugar levels cause symptoms like tiredness, dryness of mouth, frequent urination, weigh loss, infections of private parts etc. but these symptoms are not always there. and many people with diabetes do not have any symptoms. and then diabetes remains undiagnosed for long time and causes serious health problems like heart attack, blindness etc. so everyone after age of 40 and every adult who is overweight should get himself investigated for diabetes periodically i.e. every 2 to 3 years even when there are no symptoms.
Diabetes happens to only those people, who have other family members with diabetes.
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Those people, whose parents or siblings have diabetes, are at much higher risk of developing diabetes. but it can happen to anyone, even if there is no other family member with diabetes.
Diabetes should be treated with medicines only if patient has symptoms of diabetes.
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Following healthy lifestyle is first treatment of diabetes. but if its not well controlled with healthy lifestyle alone, medicines should be started to control blood sugar even if patient has no symptoms. because high blood sugar is like poison in blood and it damages every system of human body if left untreated for long time.
Diabetes medicines are toxic to kidney, if taken for long time.
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Diabetes medicines are not toxic to kidney or any other body parts. in facts diabetes medicines help to save kidneys and other systems of our body by controlling sugar levels.
If you are taking medicines for diabetes, you are protected from all problems.
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Only taking medicines is not enough, your blood sugar levels must be well controlled to stay away from complications. blood sugar levels must be checked periodically (daily to every 2 to 3 monthly, as advised by doctor) and medicine dose adjusted to maintain good control of diabetes. other investigations like kidney function test, lipid profile, urine protein, eye examination etc., should be done periodically to detect complications at early stage.