The veins enlargement around the anus area, that is the main root of piles can be caused because of the following reasons.
Pregnancy: It is seen that piles can be most commonly found in pregnant women. This is the result of the enlargement of the Uterus in this period. As the Uterus of a woman increases in size with the advancement of pregnancy, it causes some pressure on the colon vein. This results in bulging of the veins causing piles.
Aging: Aging can also be a prime factor behind this disease as it is most common in people above forty-five years of age. But this strictly does not mean that piles cannot be found in children or young people.
Diarrhea: Unrelieved Diarrhea can also be a primary reason behind the occurrence of the hemorrhoids.
Chronic Constipation: The blood vessel walls experience additional pressure when you are unable to pass the stool properly.
Long sittings: If you are involved in something that requires you to sit for a longer duration of time, it can be the main cause behind the hemorrhoids.
Heavy Lifting: Hemorrhoids can also be caused if someone is regularly engaged in lifting the weighty objects.
Anal Intercourse: This can cause the new hemorrhoids to occur or also might worsen the condition if you are already suffering from piles.
Obesity: In case you are suffering from the Obesity caused because of diet, it can also lead to hemorrhoids if not taken care of.
Genetics: Some people inherit the hemorrhoids tendency from their ancestors.