The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
terms of cortisol and epinephrine release we're actually able to increase immune system function. Now that shouldn't surprise you if you understand a little bit about how epinephrine works in the body and in the brain. It essentially is the signal by which the nervous system can inform immune organs, things like the spleen and other organs that make killer cells of various kinds, B cells and T cells, to go in combat infections, bacteria, and viruses.
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So we know that that effect comes from adrenaline in the body. What does that mean for you? That means if you want to increase your immune system in the short term you want to increase your epinephrine in the short-term.
Your body is actually primed to resist infection, when you have high levels of epinephrine in it for short periods of time.
Brief bouts of stress, which now you should be thinking about in terms of cortisol and epinephrine release we're actually able to increase immune system function.
It also, I should mention, activates our immune system. Contrary to popular belief that stress inhibits our immune system, epinephrine is deployed, it's released at great levels in our brain and body when we are stressed. And that actually protects us against infections of multiple kinds, at least in the short-term.
your body is actually primed to resist infection when you have high levels of epinephrine in it for short periods of time
brief bouts of stress which now you should be thinking about in terms of cortisol and epinephrine release we actually able to increase immune system function the duration here is really important because if stress stayed too high for too long then yes indeed stress can hinder the immune response but for a period of about 1 to 4 days it actually can protect you by way of increasing the immune response