Over-correcting a low glucose level before bed. If you have type 2 diabetes, a treatment plan that doesn’t adequately address your nighttime insulin resistance or missed doses of your glucose lowering medication can cause high glucose levels at night (and often also during the day). In particular, high-fat, high-carb meals (like pizza or pasta with creamy sauces) might delay glucose absorption causing an extended period of high blood sugar levels. By identifying your body’s patterns, you can figure out what is causing your high blood sugar and how to address it.Ĭommon causes of a glucose increase at night include:Įating too close to bedtime: whether you’re snacking or eating a late dinner, a post-meal glucose spike can lead to high glucose levels overnight. You may start with high glucose when you go to bed, start the night in range but go high several hours later, or spend most of the night in range until the hours just before you wake up. You can experience different patterns of high blood sugar at night. For example: what food you ate during the day, how much and when you exercised, whether you ate snacks before bed, the timing of your insulin doses, and your stress level. There are many factors that can cause your blood sugar to increase at night. For more information on DKA, read “ Ketosis vs. This occurs mainly in people with type 1 diabetes and can be life-threatening. Very high glucose levels can be a sign of diabetic ketoacidosis ( DKA, or high levels of ketones in your blood indicating that there is not enough insulin in your body). This occurs when glucose levels are too high over a long period of time. It is important for people with diabetes to reduce high blood sugar as much as possible for two key reasons:įrequent hyperglycemia can lead to major health complications caused by damage to blood vessels and nerves, which can affect your eyes, heart, kidneys, and other organs. However, frequent or long-term highs – particularly extremely high levels (above 250 mg/dl) – can be dangerous. Most people with diabetes cannot avoid some high glucose levels. Glucose levels that are occasionally a little high at night generally don’t pose serious, immediate health concerns. Is It Safe to Sleep with High Blood Sugar? Other symptoms of hyperglycemia that you may experience during the day or night include: Waking up often to urinate or to drink water While many people with diabetes aim to keep blood sugar levels below 180 mg/dl during the day, some people aim for the lower range of 120 or 140 mg/dl at night, when they are not eating.Īt night, symptoms of hyperglycemia include: Hyperglycemia, or “high glucose,” is not defined by one specific glucose level. If your blood sugar is high at night you may experience symptoms of hyperglycemia. Here are some tips and strategies for how people living with diabetes can get better sleep at night and avoid high blood sugar levels. While this article focuses on overnight highs, you can learn more about preparing for and preventing hypoglycemia (low blood sugar) here. Trying to keep glucose levels stable overnight will help you get more sleep and feel better – and a good night’s sleep will aid your diabetes management the next day. Some people with diabetes experience high overnight levels while others fear or experience a glucose drop during sleep. With the many factors that can affect your glucose levels, nighttime can be a challenge. Why do your blood sugar levels increase at night, and what you can do to prevent this? Learn strategies for managing high blood sugar levels overnight and in the morning, including healthy bedtime snacks.įor National Sleep Awareness week, we are focusing on how to regulate overnight blood glucose (sugar) levels.
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