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What should not be eaten when blood sugar is high

Mar 18, 2025 Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Under normal circumstances, patients with high blood sugar should not consume high-sugar or high-starch foods, such as carrots, candies, fried chicken, seafood, watermelon, and similar items. They also should avoid medications such as ofloxacin capsules, rifampin capsules, prednisolone acetate tablets, indomethacin tablets, and losartan potassium hydrochlorothiazide tablets. It is recommended that diabetic patients strictly control their diet.

Generally, patients with high blood sugar should not consume foods such as durian, candy, fried chicken, seafood, watermelon, etc. They are also advised against using medications including prednisolone tablets, phenytoin sodium tablets, isoniazid tablets, gatifloxacin tablets, and tamoxifen citrate tablets. Detailed explanations are as follows:

I. Foods

1. Durian

Durian is a fruit with relatively high sugar content and a high glycemic index. After consumption, a patient's blood glucose may rise significantly, which is not conducive to maintaining stable blood sugar levels. Excessive consumption may also lead to weight gain, further affecting blood glucose control.

2. Candy

Candy contains extremely high levels of sugar, which can rapidly elevate blood glucose levels after consumption, adversely affecting blood sugar control in diabetic patients. Patients should avoid eating candy, especially those containing high-fructose corn syrup.

3. Fried Chicken

Fried chicken is a high-calorie food and usually contains a large amount of fat. Its consumption can easily lead to elevated blood glucose and weight gain. Diabetic patients should avoid fried chicken and may choose roasted or stewed chicken as alternatives.

4. Seafood

Seafood typically contains abundant nutrients such as protein, fat, and collagen, and also has a certain caloric content. These components are converted into energy in the human body, and excessive intake may lead to elevated blood glucose levels.

5. Watermelon

Watermelon contains fructose and glucose, which are converted into blood glucose after consumption. Therefore, when blood sugar levels are high or unstable, eating watermelon may further elevate blood glucose, which is not conducive to disease management.

II. Medications

1. Prednisolone Tablets

Prednisolone tablets have strong anti-inflammatory and immunosuppressive effects and are commonly used to treat inflammation and autoimmune diseases. This medication inhibits insulin secretion and antagonizes insulin action, leading to elevated blood glucose levels and potentially inducing or worsening diabetes.

2. Phenytoin Sodium Tablets

Phenytoin sodium tablets may affect liver enzyme activity, interfere with drug metabolism, and thereby impact blood glucose control. Additionally, it may cause side effects such as weight gain and insulin resistance, which are unfavorable for managing blood sugar levels.

3. Isoniazid Tablets

Isoniazid tablets are effective in treating diseases such as tuberculosis but may affect glucose metabolism and lead to elevated blood glucose levels. For patients with high blood sugar, blood glucose changes should be closely monitored during anti-tuberculosis treatment, and treatment plans should be adjusted under a physician's guidance.

4. Gatifloxacin Tablets

Gatifloxacin tablets belong to the quinolone class of antibiotics. Gatifloxacin may affect insulin secretion or function, potentially causing blood glucose abnormalities, including both hyperglycemia and hypoglycemia, which may result in elevated blood sugar levels.

5. Tamoxifen Citrate Tablets

Tamoxifen citrate tablets are used in the treatment of breast cancer but may affect insulin sensitivity, leading to elevated blood glucose levels. For patients with high blood sugar, especially those already diagnosed with diabetes, blood glucose changes should be closely monitored during tamoxifen use, and treatment plans should be adjusted under a physician's guidance.

Diabetic patients are advised to strictly control their diet, following the principles of low sugar, low fat, low calories, and high fiber, and to plan meals appropriately to maintain stable blood glucose levels. Regular blood glucose monitoring and adjustments to diet and treatment plans according to medical advice are also recommended. Please seek timely medical assistance if necessary.

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