World Diabetes Day: Understanding Diabetes and Emergency First Aid

Every year on November 14th, the global community observes World Diabetes Day to raise awareness about one of the fastest-growing health conditions in the world. In Canada alone, more than 3.7 million people are living with diabetes, and that number continues to rise every year. While diabetes is primarily managed through lifestyle modifications and medical treatment, the condition can produce life-threatening emergencies that require immediate first aid intervention. Understanding how to recognize and respond to diabetic emergencies is an essential skill that every Canadian should possess — and a key component of comprehensive first aid training.

World Diabetes Day was established in 1991 by the International Diabetes Federation and the World Health Organization in response to growing concerns about the escalating health threat posed by diabetes. November 14th was chosen because it marks the birthday of Sir Frederick Banting, the Canadian physician and scientist who co-discovered insulin in 1921 at the University of Toronto — a breakthrough that has saved millions of lives worldwide and remains one of Canada’s greatest contributions to global health.

Types of Diabetes Explained

To understand diabetic emergencies, it helps to understand the different types of diabetes and how they affect the body:

Type 1 Diabetes

Type 1 diabetes is an autoimmune condition in which the body’s immune system attacks and destroys the insulin-producing cells in the pancreas. Without insulin, the body cannot move glucose from the bloodstream into cells for energy. People with Type 1 diabetes must take insulin injections or use an insulin pump every day to survive. This type accounts for approximately 5 to 10 percent of all diabetes cases and is most commonly diagnosed in children and young adults, though it can develop at any age.

Type 2 Diabetes

Type 2 diabetes is the most common form, accounting for about 90 percent of all cases. It develops when the body becomes resistant to insulin or when the pancreas gradually loses its ability to produce enough insulin. Risk factors include family history, obesity, physical inactivity, age, and ethnicity. Type 2 diabetes is increasingly being diagnosed in younger people, including teenagers, largely due to rising rates of childhood obesity and sedentary lifestyles.

Gestational Diabetes

This form of diabetes develops during pregnancy and typically resolves after the baby is born. However, women who have had gestational diabetes have a significantly higher risk of developing Type 2 diabetes later in life. Proper monitoring and management during pregnancy are essential for the health of both mother and baby.

Recognizing Diabetic Emergencies

Diabetic emergencies occur when blood sugar levels become dangerously high or dangerously low. Both conditions can be life-threatening and require prompt first aid:

Hypoglycemia (Low Blood Sugar)

Hypoglycemia occurs when blood glucose levels drop below normal, typically below 4.0 mmol/L. This is the more common and more immediately dangerous diabetic emergency. It can develop rapidly — within minutes — and can quickly progress to unconsciousness and seizures if not treated. Causes include taking too much insulin, skipping meals, excessive physical activity, and alcohol consumption.

Signs and symptoms of hypoglycemia include shakiness and trembling, sweating and pale skin, rapid heartbeat, dizziness and lightheadedness, confusion and difficulty concentrating, irritability or sudden mood changes, hunger, blurred vision, weakness and fatigue, and in severe cases, loss of consciousness and seizures.

Hyperglycemia (High Blood Sugar)

Hyperglycemia occurs when blood glucose levels rise significantly above normal, typically above 11.0 mmol/L. Unlike hypoglycemia, hyperglycemia usually develops gradually over hours or days. If left untreated, it can progress to a dangerous condition called diabetic ketoacidosis (DKA) in people with Type 1 diabetes, or hyperosmolar hyperglycemic state (HHS) in people with Type 2 diabetes. Both conditions are medical emergencies that require immediate hospital treatment.

Signs and symptoms of hyperglycemia include excessive thirst, frequent urination, dry mouth and skin, nausea and vomiting, abdominal pain, fruity-smelling breath (a sign of DKA), deep and rapid breathing, confusion and drowsiness, and eventual loss of consciousness.

Essential Protocols for First Aid for Diabetic Emergencies

Providing effective first aid for diabetic emergencies requires a rapid assessment of the victim’s level of consciousness and their ability to swallow safely. In 2026, clinical guidelines emphasize the “Rule of 15” for conscious patients: administer 15 grams of fast-acting glucose and wait 15 minutes to re-test. If you are performing first aid for diabetic emergencies and the person becomes unconscious, you must immediately transition to airway management and call 911, as the risk of aspiration makes oral glucose dangerous. By maintaining a calm environment and sitting the person down, you can prevent secondary injuries from falls during a hypoglycemic episode. Consistent first aid for diabetic emergencies training ensures that bystanders can differentiate between a “sugar low” and other medical crises like a stroke.

First Aid for Diabetic Emergencies

Responding to Hypoglycemia

If the person is conscious and able to swallow, give them 15 to 20 grams of fast-acting sugar immediately. This can be 4 glucose tablets, half a cup (125 mL) of fruit juice or regular soft drink, 1 tablespoon of honey or sugar, or 6 to 7 hard candies. After 15 minutes, check if symptoms have improved. If they have not, repeat the sugar intake. Once symptoms improve, encourage the person to eat a more substantial snack containing both carbohydrates and protein to stabilize their blood sugar.

If the person is unconscious or unable to swallow safely, do not attempt to give them anything by mouth as this creates a choking risk. Call 911 immediately. Place the person in the recovery position on their side to protect their airway. If the person carries a glucagon injection kit, and you have been trained to use it, administer the glucagon as directed. Stay with the person and monitor their breathing until paramedics arrive.

Responding to Hyperglycemia

Hyperglycemia that has progressed to DKA or HHS requires emergency medical treatment. Call 911 if the person is vomiting, has fruity-smelling breath, is breathing abnormally, or is showing signs of altered consciousness. While waiting for emergency services, keep the person comfortable, monitor their breathing and level of consciousness, and be prepared to perform CPR if they stop breathing.

Watch: First Aid for CPR Emergencies

Diabetes in the Workplace

With millions of Canadians living with diabetes, virtually every workplace has employees managing the condition. Employers have both a legal and ethical responsibility to ensure that their workplaces are safe and supportive for employees with diabetes. This includes allowing employees to monitor their blood sugar and take medications as needed, providing access to food and beverages for managing blood sugar levels, training designated first aiders to recognize and respond to diabetic emergencies, and including diabetes management in workplace emergency plans.

Investing in workplace first aid training that covers diabetic emergencies ensures that coworkers can respond effectively when someone experiences a blood sugar crisis. This training creates a safer work environment and demonstrates an employer’s commitment to the health and wellbeing of their team.

Preventing Diabetes: Risk Reduction Strategies

While Type 1 diabetes cannot currently be prevented, the risk of developing Type 2 diabetes can be significantly reduced through lifestyle modifications. Maintaining a healthy weight, engaging in at least 150 minutes of moderate physical activity per week, eating a balanced diet rich in whole grains, fruits, vegetables, and lean proteins, limiting consumption of processed foods and sugary drinks, monitoring blood pressure and cholesterol levels, and getting regular health screenings are all proven strategies for reducing diabetes risk.

Physical activities like swimming are particularly beneficial for diabetes prevention and management because they provide excellent cardiovascular exercise while being gentle on the joints. Regular physical activity improves insulin sensitivity, helps maintain a healthy weight, and reduces stress — all of which contribute to better blood sugar control and overall health.

First Aid Training Saves Lives in Diabetic Emergencies

Diabetic emergencies can strike suddenly and without warning, making it essential that people around those with diabetes know how to respond. A coworker, family member, teacher, or bystander who recognizes the signs of a diabetic emergency and provides appropriate first aid can literally save a life. Comprehensive first aid courses cover diabetic emergencies alongside other critical skills, ensuring that certified first aiders are prepared for the full spectrum of medical emergencies they may encounter.

This World Diabetes Day, consider taking action by learning the signs and symptoms of diabetic emergencies, talking to friends and family members with diabetes about their emergency action plans, ensuring your workplace has trained first aiders, and enrolling in a first aid course that covers medical emergencies including diabetes. Every person who gains this knowledge becomes part of a safer, more prepared community.