The negative effects of elevated cortisol levels caused in part by digital overstimulation and stress are endless. Some of the most noteworthy symptoms are the negative impact it has on our immune system and our deteriorating memory recall ability. You may have noticed the people who are busy and stressed are often sick - this correlation has been confirmed by doctors who have studied how cortisol affects our immune system by interfering with T-cell production and function (i.e. our immune cells), thus making us more susceptible to invading pathogens. This was outlined in a longitudinal study that compiled over 30 years of research to find correlations between acute stressors, increased cortisol and lowered immune response.
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