Our busy lives can often leave us feeling stressed and anxious, resulting in poor food choices, sporadic meal timings, regular snacking and comfort eating.
It would seem obvious this is the main driver of weight gain, but perhaps the stress we are feeling is also having a profound effect upon us on a hormonal level and encouraging obesity.
Cortisol is the so called “stress hormone” which initiates the fight or flight response, a set of physiological responses to perceived threats.
For our early ancestors, this response would have been mainly physical such as avoiding a predator or defending against rival tribe members.
The subsequent release of cortisol prepares our bodies for action - to fight back or get out of there. This preparation includes a release of adrenaline to increase blood flow to the working muscles but critically it also enhances glucose availability to fuel those muscles.
All energy is directed towards survival and most other bodily processes are temporarily restricted. Normally there would follow a period of intense physical activity to burn up the excess glucose and shortly afterwards you would either have been lunch for something with big teeth or lived to tell the tale.
Cortisol and glucose levels would return to normal in the aftermath and you would go on about your caveman business.
Fast forward to our modern world where many people lead stressful and busy lives, meaning the same cortisol response is engaged on a long-term basis.
This presents a problem. Financial worries, work problems, marital issues, childcare concerns and sleep deprivation all cause stress - leading to elevated cortisol and glucose levels.
However, none of these forms of stress are associated with a period of high intensity activity to burn off the glucose.
Higher blood glucose levels result in a higher secretion of insulin and long term this can lead to insulin resistance within the muscle tissue and liver.
Insulin resistance means even more insulin must be released to lower blood sugar levels and we know this situation is one of the main drivers of obesity, especially when combined with poor food choices.
Elevated cortisol levels can also increase your appetite and cause cravings for sweet, fatty and salty foods.
Over time, this situation can lead to Type 2 Diabetes and elevated blood pressure which increases the risk of heart disease and stroke.
An added problem may lie in the fact elevated cortisol levels will lead to the body producing less testosterone, which can result in a reduction of muscle mass. Therefore, the number of calories which you burn daily takes a dip and we lose strength and power.
Obviously, if we are consuming more calories than we are burning we face a challenge to maintain a healthy weight whether we are stressed or not.
However, if we are experiencing long term stress we exacerbate weight gain via our hormonal response to it.
Instead of prioritising dietary control at this time, perhaps a more effective solution would be to combat the source of the stress to create a better foundation for future behaviour change.
Tried and tested ways of reducing stress include regular exercise, talking therapies, mindfulness, creative hobbies and meditation.
Our physical and mental health are intrinsically linked and one cannot flourish without the other.
If long term stress and weight gain have become an ongoing problem in your life, it may be worth a conversation with your GP about a referral to Healthy Options and perhaps we could help to turn things around with specialist guidance.
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