![]() The mechanism behind blood sugar crashes isn’t fully understood, and it may vary between people. And even identical twins, who share all their genes, could have different glucose responses after eating the same foods. But they were more common in some people than others. We saw blood sugar crashes in plenty of our PREDICT participants, who underwent continuous glucose monitoring for two weeks. Have you ever noticed that you’re suffering from a terrible afternoon slump, when your lunch companion who ate exactly the same meal seems just fine? Are some people more susceptible to blood sugar crashes than others? Our PREDICT study showed that blood sugar dips after eating were linked to increased hunger, suggesting that curbing sugar crashes might be a good weight control strategy but cutting the urge to snack.īesides making you feel lousy and hungry, unhealthy blood sugar responses after eating, such as spikes and crashes, have been linked to a myriad of health problems, including chronic diseases like obesity, diabetes, and heart disease. Repeated reactive hypoglycemia (frequent blood sugar crashes) can lead to prediabetes and eventually type 2 diabetes if left untreated. This causes tell-tale symptoms including hunger, irritability, fatigue, anxiety, headaches, difficulty concentrating, shakiness, and dizziness.Ī blood sugar crash leaves you hungry - even if it wasn’t that long since you ate. So when you have low blood sugar, the cells in your body aren’t receiving enough energy. The glucose in our blood is the primary source of energy for our body and brain. But even if you don’t have a way of monitoring your blood glucose, you can recognize when you are experiencing a blood sugar crash by simply observing how you feel. Are blood sugar crashes bad for you?Ī blood sugar crash is medically defined as a blood glucose level below 70 mg/dL (3.9 mmol/L). This is technically referred to as postprandial hypoglycemia or reactive hypoglycemia, but it’s commonly called a blood sugar ‘crash’. This is a perfectly normal process that happens in all of us, whatever we eat, and protects your body from the harmful effects of high blood sugar (hyperglycaemia).īut when your blood sugar increases very steeply after eating, your body can release too much insulin, making your blood sugar plummet below normal levels. In turn, this triggers your cells to take up the glucose to use for generating energy, swiftly returning your blood sugar levels to normal. Your blood sugar levels begin to rise, prompting your body to release insulin. Your body breaks down the carbohydrates in your food into its glucose (sugar) building blocks, which pass into your bloodstream. A key strategy to maintaining energy levels, achieving a healthy weight and long-term health.īefore we dive into the science behind a blood sugar crash, here’s a quick recap of what happens when you eat something containing carbohydrates.The long-term impact of poor blood sugar control.What happens to our blood sugar levels throughout the course of a day.We find out why they happen, why they make you feel so bad, why some people seem to suffer from them more than others, and how to eat in the way that best maintains your energy and health. In this post, we explore the science behind the blood sugar crashes. Many of us will have experienced those mid-afternoon funks that leave you feeling tired, sluggish and desperately craving chocolate and caffeine. What is a ‘blood sugar crash’? Why do they happen? And how can you eat to avoid them?
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