Pain under the left breast could have many possible causes, such as a muscle strain, infection, or hormone changes. Several internal organs can also cause pain that radiates to the left breast, ...

Experiencing random aches and pains is just part of life. But when you have pain under your left breast, it’s understandable to have questions. After all, your heart and a bunch of other vital organs ...

Reduced blood flow to the heart is usually caused by fatty deposits, or plaques, within the arteries supplying blood and nutrients directly to the heart. This is also known as coronary artery disease.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Experiencing random aches and pains is just part of life. But when you have pain under your left breast, ...

Feeling pain under your left breast can be especially worrying. After all, important organs and structures sit on that side of the body, like your heart, left lung, stomach, spleen, oesophagus, ribs, ...