There are more than 7,500 varieties. Apples make appearances in the cultural history of many ancient civilizations, including the Greeks, Romans, and Nordic tribes. It only made its way to present day America with European colonizers.
Many report the health benefits of apple include improved digestion, prevention of stomach disorders, gallstones, constipation, liver disorders, anemia, diabetes, heart disease, rheumatism, eye disorders, a variety of cancers, and gout. A 2006 study published in the journal Experimental Biology and Medicine found that quercetin (one of the antioxidants found abundantly in apples) was one of two compounds that helped to reduce cellular death that is caused by oxidation and inflammation of neurons.
Thought to have originated in Southeast Asia, lime trees were transported to Egypt and Northern Africa by Arab traders in the 10th century. Arabian Moors carried them to Spain three centuries later, and like the cultivation of many other fruits, they spread throughout Southern Europe during the Crusades.
Lab research has shown that compounds in citrus fruits such as limes, called limonoids, can help fight lung, breast, stomach and colon, skin, and mouth cancers.