Understanding the Dangers of Blood Sugar Spikes-by Harold Gunatillake
A healthy and normal fasting blood sugar level in the morning before breakfast is usually below 100 mg/dL (less than 5.6 mmol/L). For those managing diabetes, a comfortable target range often ranges from 70 to 130 mg/dL.
Morning Blood Sugar Targets
- Understanding your blood glucose goals can be really helpful, whether you have diabetes, pre-diabetes, or want to stay Here’s a friendly and easy-to-understand guide:
Normal (No Diabetes): Below 100 mg/dL (or 4.0 to 5.4 mmol/L)
Pre-diabetes: 100 to 125 mg/dL
Diabetes (Target Range): 70 to 130 mg/dL
Morning fasting blood sugar testing mainly helps to determine if you might have diabetes. Once you’ve been diagnosed, checking your morning level with the strip may seem a bit unnecessary. Instead, it’s often more helpful to check your random blood sugar
around 5 pm to see whether your levels are well managed or need adjustment through your diet or medication. This way, you can better understand how your body responds throughout the day.
Why Morning Levels Fluctuate
- It’s perfectly normal for your blood sugar to be a little higher in the morning, even if you haven’t eaten
- The Dawn Phenomenon: From about 3 a.m. to 8 a.m., your body naturally releases hormones such as cortisol and growth hormone. These hormones signal your liver to release stored glucose, giving you the energy you need to start your day.
Let’s explore blood sugar spikes—what they are and why managing them with a well-balanced, low-glycaemic diet, medication, and healthy lifestyle choices is so important.
Blood sugar spikes can be worrying, but understanding them helps us take better care of ourselves. When our blood sugar rises quickly, it might cause us to feel tired, get headaches, or feel hungrier than usual. Over time, regular spikes could lead to more serious health problems like insulin resistance or diabetes. That’s why it’s so helpful to be mindful of how our diet and habits affect our blood sugar. Making small, positive changes can make a big difference, helping you keep your blood sugar steady and supporting your overall health and happiness.
A “bad” spike typically occurs when blood sugar climbs to 180 mg/dL or higher after eating and then stays at that high level. For
most healthy people, a normal post-meal spike is usually below 140 mg/dL. If you notice your blood sugar regularly reaching these high levels, it’s really helpful to understand when it might be a cause for concern.
Blood sugar spikes are quick, short-term rises in glucose levels that usually happen after eating. While having small spikes now and then is normal, frequent or severe ones can be harmful over time. They can cause oxidative stress and inflammation, which might lead to heart problems, insulin resistance, and type 2 diabetes.
Why Do They Happen?
- When you eat, your body naturally breaks down carbohydrates into glucose (sugar), which then enters your bloodstream. For those without Diabetes, your pancreas releases insulin—an important hormone that helps move this sugar into your cells so you can use it for energy, preventing any sharp If you have Diabetes or Prediabetes, however, your body may not produce enough insulin or might not respond to it effectively. This can cause glucose to build up in your blood, leading to sudden increases often above 180 mg/dL.
Foods that cause blood sugar to rise quickly are mainly highly processed, refined carbs and concentrated sugars. These foods lack sufficient fibre, protein, or fat to slow their digestion, making them less favourable for blood sugar control.
The biggest culprits include:
Sugary drinks like sodas, sweet teas, fruit juices, and speciality coffee drinks are all popular choices. They give you a quick and intense burst of liquid sugar, which can be quite tempting. It’s good to enjoy them in moderation to help keep your energy balanced and your health in good shape.
Refined grains include white bread, white rice, and processed breakfast cereals. Since they are stripped of fibre, they deliver glucose quickly, acting like pure energy sources.
Starchy vegetables like baked white potatoes and instant mashed potatoes tend to have a pretty high glycemic load—sometimes causing blood sugar levels to spike more than a glazed doughnut. Gives you a good idea to enjoy these in moderation!
Sweets and candies like gummy bears, hard candies, cookies, and pastries can cause rapid, intense spikes in blood sugar, often followed by a sharp crash.
Dried fruits like raisins, dates, and dried apricots are wonderfully sweet treats. When they’re dried, their natural sugars become even more concentrated, so just a small serving can give you a big boost of energy—much more than fresh fruit!
So, what food should you eat to avoid spikes?
When blood sugar rises, it’s important to help your body manage it gently. Try to include foods that are low in carbs but rich in fibre, protein, and healthy fats—these will support your stability. Don’t forget to drink plenty of water, too—it helps your kidneys do their best to flush out the extra sugar and keep you feeling your best.
Are They Dangerous?
Here’s a friendly overview of how blood sugar fluctuations can affect you:
In the short term, you might experience the “Sugar Crash’—a sudden drop in blood sugar after your body releases lots of insulin to manage a quick sugar spike. This can leave you feeling pretty tired, very hungry, shaky, and craving more sweets.
You might also notice early signs such as feeling thirstier than usual, needing to pee more often, experiencing headaches, or having blurry vision. These are common indicators to watch for.
If high blood sugar levels aren’t managed well, they could lead to serious emergencies like Diabetic Ketoacidosis (DKA). Taking care to monitor and control these levels can really make a big difference in staying healthy and safe.
Considering the long-term effects, constantly experiencing these sudden peaks and dips can lead to persistent damage.
- Heart health is important! High blood sugar can hurt your blood vessels and their lining, which increases your chances of heart disease and Taking care of your blood sugar levels can make a big difference for your overall heart well-being.
Constantly elevated blood sugar levels can sometimes cause nerve damage, affect kidney health, and lead to eye problems. Taking steps to manage blood sugar can help protect your overall health.
Here’s a friendly guide on managing spikes:
- You can help keep your blood sugar levels steady by making some simple changes to your diet and daily habits:
- – Adjust Meal Sequencing: Try eating fibre and protein first, then carbohydrates, to help slow down glucose
- – Stay Active: Taking a brief walk after meals can encourage your muscles to use up some of that excess blood
- – Choose Complex Carbohydrates: Go for foods with a low glycemic index to give your body a gentler energy
Resistant starch
Starchy foods like white polished rice, which can cause sugar spikes, can be transformed into resistant starch during cooking. This helps reduce sugar absorption in your gut and allows these foods to act as prebiotics, nourishing the beneficial microbes in your large bowel.
If you keep your fried rice or biriyani in the fridge overnight and reheat it the next day, it might not cause the blood sugar spikes you expect.
This includes noodles, pasta, potatoes, and other starchy foods you might find in your supermarket.
Foods with resistant starch offer many tasty options to include in your diet. For instance, you might love certain types of bread, cooked and cooled potatoes, green bananas, and legumes.
Adding these to your meals can make your eating routine more
enjoyable and nutritious, helping you to enjoy better health every day.
Plantains and green bananas are interesting because, as they ripen, their starch changes to regular starch, making them sweeter and softer.
Beans, peas, and lentils—especially white beans and lentils—are wonderful sources of resistant starch.
Whole grains like oats and barley are nutritious choices that you can enjoy as part of a healthy diet.
Cooked and cooled rice, as mentioned earlier.
