By Dr. Mercola
'I’ve often said that you cannot divorce your health from your emotions. Every feeling you have affects some part of your body, and stress can wreak havoc on your physical health—especially if you’re not exercising or eating right, as both of these can help keep stress in check in the first place.
Still, even if you’re doing everything “right,” your emotions—both chronic and acute—can wield great power over your body.
The classic definition of stress is “any real or imagined threat, and your body’s response to it.” Your body’s natural stress response can have a significant impact on your immune function, brain chemistry, blood sugar levels, hormonal balance, and much more.'