Extremely high or extremely low blood glucose can also become medical emergencies.

However, determining why a particular person died requires medical records, laboratory results, clinical history, and—when appropriate—a medical examination or autopsy.

A photograph on social media cannot establish the cause.

That's why sensational claims such as “Doctors reveal three foods that caused her death” should be treated cautiously unless supported by credible medical documentation.

The Bigger Concern: Long-Term Blood Sugar Control

One breakfast isn't usually the entire story.

Diabetes management involves multiple factors:

Blood glucose levels

Medication adherence

Physical activity

Body weight

Blood pressure

Cholesterol

Kidney function

Sleep

Smoking

Overall dietary pattern

A person could eat a seemingly healthy breakfast and still have poorly controlled diabetes because of other factors.

Conversely, someone with diabetes can often enjoy a wide variety of foods when portions, medication, activity, and overall nutrition are appropriately managed.

What Should People With Diabetes Do?

Rather than following viral lists claiming that certain foods are absolutely forbidden, it's more useful to look at the entire dietary pattern.

Read nutrition labels.