What causes High Blood Sugar?

What causes High Blood Sugar?

What causes High Blood Sugar in diabetics is the high starch or glucose or carbohydrate content in the food.

When we eat food, it gets digested and broken down into various elements like sugar, protein, fat etc.

Among these sugar is important for diabetics. This is because sugar from food enters into blood stream. This could lead to rise in blood sugar levels. You can check your blood sugar levels with a blood glucose monitor like this.

Normally insulin, a protein produced by pancreas takes care of the sugar and makes sure the blood sugar levels remain in normal range.

In some cases, pancreas cannot produce insulin or the body cannot use insulin.

Then blood sugar levels are not regulated, they end up showing in the blood and this leads to high blood sugar in most diabetic patients.

If you have diabetes and are taking medicines for diabetes, your blood sugar may rise for the below reasons too. For example, if you have missed to take your insulin dose or oral medicine for diabetes, your blood sugar levels may rise. In general, if you eat too many carbohydrates than normal, your blood glucose levels may rise rapidly too. Another reason could be that you might have had an infection. When you have an infection anywhere in the body, your blood sugar levels may fluctuate irrespective of what you eat.

This is ‘What causes High Blood Sugar’. When you know What causes High Blood Sugar, you can stay away from that.

Sugary Food

For such reasons diabetics must eat food that is low in sugar and high in fibre, proteins etc.

This makes the diet safer for diabetics as low levels of sugar in food can mean less chance of causing high blood sugar.

Lack of Exercise

Another tip to diabetics is to be doing regular exercise so that blood sugar levels stay in normal range.

Regular exercise improves the body metabolism. When you exercise well, your blood sugar levels get to normal.


Most diabetics hesitate to eat fruits due to sugar content in fruits. Doctors say diabetics can generally eat fruits as fruits have lot of nutrition, vitamins and fibre. However, they just have to eat such fruits in moderate amounts only.

If you ask a doctor What causes High Blood Sugar they would not normally say it is fruits.

So it cannot be fruits that diabetics should avoid eating.

Organ failure and diabetes

High sugar in food causes high blood sugar. It may then get in way of blood circulation as it settles on the inner walls of blood vessels.

This may eventually lead to narrowing of blood vessels and restricted blood circulation, meaning some organs may not get enough blood supply or nutrition.

When this happens to vital organs, a serious situation of organ failure may occur and may lead to critical medical situation.

Summary | What causes High Blood Sugar?

Despite all this, people say diabetics need not stop eating good food altogether. However, they can eat limited amount of food. 

In summary, the above tips are very helpful for diabetics to keep their blood sugar levels in normal range and protect their health in long term. Moreover, we have a post here completely dedicated to what a diabetic can eat.

If diabetics fail to take precautions, then health may suffer and lead to organ failures, heart attack, stroke etc.

If you eat less of What causes High Blood Sugar, then you can protect yourself from such health issues.

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