Do you believe people (and some animals) can die from a broken heart?

Since the recent death of Elvis Presley's daughter, Lisa Marie, died from a heart attack at age 54, they are saying she really died from a brokenheart. Her Dad, Elvis Presley died of a heart attack at age 42 (I think). Lisa Marie was only 9 years old. Then her son, Benjamin Keogh committed suicide two years ago due to depression. Lisa Marie blamed herself everyday for his death.
Recently she was at the Golden Globes and the actor that played Elvis in the movie Elvis won an award for best actor. That was two days before her death.
I believe she died of a broken heart. Her heart just couldn't take such sadness any longer. Do you believe it can happen?
Do you believe people (and some animals) can die from a broken heart?
Post Opinion