Blood sugar level 250-400 mg/dl after eating

Blood sugar level 250-400 m/dl after eating

Ok, you ran diabetes test and you got blood sugar level 250-400 mg/dl after eating ranging 251, 252, 253 ,254 ,255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, ,395, 396, 397, 398, 399.

This is considered as mild to moderate Diabetes. While giving more info, I have decided to share with you some of problems my daily patients online and offline have, with appropriate advice and caring tips.

Hope you will understand if I let them anonymous to respect their privacy (most of these patients are from my offline clinic). I wish the advice would be helpful for you too. If you have your own concern, do not hesitate to write me back. 

NORMAL or DANGEROUS    Type Your Blood sugar Level:    mg/dl

Why getting blood sugar levels 250-400 mg/dl after eating?

After eating, the intake of carbohydrates we take with food increases the levels of glucose in our bloodstream. So, there is a peak of hyperglycemia after we eat.

In normal people, the body increases the levels of insulin in order to neutralize the increased glucose levels.

In diabetic people, this compensatory mechanism does not work properly, due to the improper production of insulin, or to the decreased response of the cells towards insulin, or both.

So, glucose builds up in the bloodstream causing hyperglycemia.

My patient case: Epileptic Patient with blood sugar 288 mg/dL after eating

Patient's Case: Hello,

I am 30 years old, with weight around 123 kgs. My blood sugar levels (bsl) were detected high recently up to 288 mg/dL. My left heel is very swollen and tendered and stiffed. Is this due to high bsl? I take Phenytoin 300 and sodium valproate 500 for epilepsy since 15 years now. Can they cause high bsl?       

Answer: Hi, 

A blood sugar level of 288 mg/dL after eating is indicating that you are diabetic.

Having your left heel inflammed (very swollen, tendered and stiffed) is not related to high bsl. It is indicating inflammation of soft tissue of sole. Apply cold compresses and take anti-inflammatory meds orally and apply locally. 

Anti-epileptic drugs like Phenytoin 300 can cause blood sugar to raise up to spike levels.  You have been taking anti-epileptic drugs for 15 years. There are some studies that suggest that long use of these drugs causes adverse effects in bone mineralization and calcium metabolism. Troubles with bones may rise as the time passes.

On the other hand, some epileptic drugs affect the insulin production thus increasing the risk of type 2 diabetes. Fluctuating blood sugar increases the episodes of seizures as well. Hyperglycemia tends to trigger focal or local seizures and hypoglycemia tonic-clonic seizures. 

Your diabetes may be induced by the drugs but this is not for sure as there is not too much evidence. I think you must see your doctor as soon as possible to examine your foot and to evaluate other health problems you have. 

Hope this is helpful for you.

The symptoms of blood sugar levels 250-400 mg/dl after eating

The symptoms are the same as in fasting hyperglycemia but with the slight difference that they happen few minutes after eating. The most common symptoms include the classic signs of diabetes:

- polyuria (excessive urination)

- polydipsia (excessive thirst),

- weight loss,

- blurred vision,

- fatigue,

- tingling or numbness of lower limbs, etc.

Patient's case: Dizzy/tired Diabetic with flunctuating 266 mg/dL Blood Glucose after eating

Question: Diabetic feeling tired and dizzy. Blood sugar fluctuating: 

- fasting glucose level (gl) = 112 mg/dL

- random blood sugar (bs) = 251 mg/dL

- after eating glucose = 266 mg/dL

- 5 hours after meal = 168 mg/dL

- 8 hours after having lunch = 133 mg/dL

What to do?

Answer: Fluctuating blood glucose levels can be dangerous as they are the cause of the future complications of diabetes. You can treat prediabetes with diet and exercise but not diabetes. 

Hypoglycemia causes dizziness and tiredness and must be avoided as it can progress to lower levels and make you faint. In your condition, you can not control your blood glucose levels only by diet and exercise. You need proper medical attention as you tend to have more hypoglycemic episodes and you need to start medication to keep diabetes under control. 

You need to repeat the glucose level test and HbA1c test as well. Make sure you do not miss any meals and that you are eating normally. Maybe you are experiencing hypoglycemic episodes because you do not eat properly or because any other underlying condition or medication you have been taking recently for other purposes.

Hope this is helpful for you.

Blood sugar levels 250-400 mg/dl after eating - Treatment

The treatment strategy includes medical therapy and therapeutic lifestyle changes.

The first-line therapy is medical therapy, following the prescription by your doctor especially for you.

Lifestyle changes are also very important in the treatment of diabetes.

Eat small meals several times a day, as scheduled by the doctor.

Exercising, take a few minutes walking after eating can help together with  eliminating risking factors like alcohol and smoking can also help.

Patient's case: Non Diabetic with blood glucose 330 mg/dL after eating an apple&drank orange juice - Is this cause for concern?

Question: Husband non diabetic went to hospital; measure blood glucose - 330 mg/dL; before he ate an apple and drank a glass of homemade orange juice. Send home with pills to lower blood sugar. Is this a cause for concern?

AnswerBefore I say my opinion I would like to know the reason why your husband was sent to the hospital. What were the main symptoms that made him a hospitalized patient? Can you send me a complete glucose levels profile done in the hospital?

The doctors in the hospital have performed an oral glucose tolerance test (OGTT) on your husband. What they did is correct. There are other ways to perform this test too. The idea is to give the patient to take 75-100grams of sugar (in orange juice for example) and monitor the blood sugar levels after then.

This test may last till to four hours as it may become necessary to monitor the blood glucose level several times if the first result is not clear. Performing HbA1C test will reveal the average glucose levels the last 3 months to evaluate what's really happening with his bsl. 

One thing is sure though: Your husband is diabetic and starting insulin medication and frequent check of blood glucose level is very important for his health.

Hope this is helpful for you.

Prevention of having blood sugar levels 250-400 mg/dl after eating

All therapeutic lifestyle and diet changes can serve as good preventive measures of getting your blood sugar within 250 to 400 high range.

If you want a more personalized help in preventing to have such high blood glucose after eating, click here to see how our doctors can help you now. 

Last medically reviewed 01/02/2019


Written by Dr.Albana Greca Sejdini, Md, MMedSc       

Medically reviewed by Dr.Ruden Cakoni, MD, Endocrinologist

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