High stress situations cause a reaction in your body that allows you to quickly respond and recover to the situation. But prolonged stress creates a situation where your body is constantly in a heightened stress response that can cause oxidative stress, inflammation, and cellular dysfunction that decreases immunity.
Most people experience stress and anxiety from situations that are often unavoidable. Magnesium is vital for homeostasis of fight-or-flight hormones and neurotransmitters released in response to stress and anxiety. Low magnesium is associated with mood disorders including stress, anxiety, and depression.