Why does the sugar level suddenly decrease? Which disease does this indicate?
- bySherya
- 29 Nov, 2025
Sudden drops in blood sugar are often seen in people with diabetes, but they can also occur in other people. If not recognized and treated promptly, the condition can become serious.
Sugar is our body's main source of energy. Every organ in the body, including the brain, requires regular and balanced sugar levels to function properly. Sometimes, due to various reasons, sugar levels can suddenly drop. This is called hypoglycemia. When sugar levels drop too low, it can cause dangerous health problems.
1 /7

Sudden drops in blood sugar are often seen in people with diabetes, but they can also occur in other people. If not recognized and treated promptly, it can affect a person's thinking and body function.
2 /7

Hypoglycemia refers to a drop in blood sugar below normal levels. A normal blood sugar level is around 80 mg/dL or higher. For the elderly or those with comorbidities, this level should be slightly higher. When blood sugar levels drop below 70 mg/dL, the body begins to warn us.
3 /7
When blood sugar begins to drop, the body sends out certain signals, such as chills, sweating, trembling hands and feet, and a rapid heartbeat. If these symptoms appear, you should immediately seek medical attention and have your blood sugar checked.
4 /7

If blood sugar drops below 55 mg/dL, it is considered serious. This condition can cause difficulty thinking, speaking, and moving. If not treated promptly, it can be life-threatening.
5 /7

There are many reasons behind a sudden drop in blood sugar: eating less or forgetting to eat, sudden or excessive physical activity, high doses of medication, especially insulin, and other illnesses or infections can all cause the body to rapidly deplete energy and cause blood sugar levels to drop.
6 /7

If the patient's blood sugar is low, give them 20 to 30 grams of carbohydrates immediately, such as juice, fruit, or glucose tablets, if they are conscious. If the patient is unconscious, never give them food; instead, use a glucagon injection at home. Also, check their blood sugar level again after half an hour. If there is no improvement, take them to the hospital immediately.
7 /7

To control hypoglycemia and diabetes, eat green vegetables, brown rice, oats, quinoa, chicken, fish, lentils, nuts, seeds, low-fat dairy products, healthy fats, and drink plenty of water. Avoid refined sugar, processed foods, white bread, sweets, and fast food. A balanced diet, regular blood sugar monitoring, and proper medication use help prevent hypoglycemia.






