The causes of lethargy can vary depending on the person.
For some, it is due to a pre-diagnosed or underlying condition where extreme fatigue and exhaustion are common side effects.
For others, lethargy can develop as the body’s natural response to someone’s lifestyle such as lack of exercise, poor sleeping pattern, stress or poor mental health.
In recent years there have been many direct connections between a common cold, the flu and Lethargy. A high proportion of people have experienced the symptoms of lethargy either during or post developing a virus, and for some, it has been found to be a long-lasting side effect. Feelings of extreme exhaustion both physically and mentally were common with those who suffered from a cold or flu.
When the body is sick, it’s the lymphatic system’s job to fight and remove the waste products such as bacteria or viruses throughout the body. It does this by creating white blood cells which can detect these foreign bacteria, toxins and waste products and then tries to remove them by returning them back into the bloodstream.
When this system is overworked, the drainage of this fluid can become impaired causing swelling of the lymph nodes which in some cases can prolong the recovery period and cause longer-term symptoms such as fatigue, grogginess and lethargy.
Poor mental health and lethargy share common symptoms such as low mood, lack of energy and motivation and often become closely linked because of this.