Heart disease is the leading cause of death among both men and women in the United States. It is usually caused when a sticky substance called plaque builds up in the arteries. Often, the only symptoms of heart disease are chest pain or discomfort. Why do you think of heart disease is so prevalent in the United States? How could heart disease affect other organ systems? ​

It's very common in America because it's due to the amount of high cholesterol that rises up when eating fast food. It affects other organs like the brain and kidney, but mostly the heart.

Explanation:

For the first sentence, just think about the amount of McDonald's around every neighborhood. Many people buy it because it is cheap (not only for McDonald's though) and other times, they don't want to cook. For the second sentence, your heart needs to pump regularly in order to survive so consuming many kinds of junk food can cause your heart to be more weaker and soon, the blood will not be able to go through your body.