Insomnia is the inability to sleep and there are many reasons people may suffer with it, but here are a few common causes:
- poor sleep habits, a lack of bed time routine
- depression or anxiety
- lack of exercise
- chronic illness
Type II diabetes occurs when the body’s cells become resistant to insulin. Insulin works like a transporter, carrying glucose into the cells that is then used for energy production. If the cells can’t get their sugar fix, they become starved (and this is why you crave carbs). The glucose stays in the blood where it can cause a lot of inflammation and damage to organs such as the eyes or even limbs (diabetic-induced ulcers and amputation).
How does sleep deprivation lead to weight gain and diabetes?
Cortisol, one of our stress hormones (although it does many other things in the body too), is supposed to be at its lowest at night, helping us drift off into a deep and blissful sleep, and then begins to rise in the early hours of the morning to wake us up again. But if you are chronically stressed, your cortisol can go on a rollercoaster ride that significantly impacts on your ability to sleep.
High cortisol levels not only keep you awake, they stimulate the production of blood glucose (because we need the energy to deal with the stress) and our bodies quickly become insulin resistant, even after only 24 hours of sleep deprivation.
Other consequences of sleep deprivation include the production of inflammatory molecules and free fatty acids that accumulate in your adipose (or fat) tissue.
High cortisol-induced sleep deprivation leads to cravings for fatty foods and carbohydrates (chocolate anyone?) by the same mechanisms, leading to further weight gain.
Who feels like exercising when they are exhausted? Not many people I would say, and the science backs this up. Sleep deprivation typically results in more sedentary behaviour also leading to weight gain.
Too much sleep can be just as bad according to the research.
So what is the magic number to aim for? Those who get less than 6 hours or more than 9 hours per night have a much higher risk of central adiposity (that is fat around the middle) than those who get between 6 and 9 hours.
Sleep is THE most important thing when it comes to your health. Remember there is no magic pill so it’s up to you to make the changes you need to be the best version of you. Make a booking today to get the support you need.
- Association of sleep disturbances with obesity, insulin resistance and the metabolic syndrome. https://doi.org/10.1016/j.metabol.2018.04.001
- Role of Sex and the Environment in Moderating Weight Gain Due to Inadequate Sleep. https://doi.org/10.1007/s13679-017-0290-7
- Weight gain in first-semester university students: Positive sleep and diet practices associated with protective effects. https://doi.org/10.1016/j.physbeh.2018.05.009
- Is exercise a viable therapeutic intervention to mitigate mitochondrial dysfunction and insulin resistance induced by sleep loss? https://doi.org/10.1016/j.smrv.2017.01.001