Constipation: A connection to cardiovascular disease?

People with chronic constipation may be more prone to heart disease, but the connection remains unclear. Straining and bearing down to have a bowel movement can temporarily boost blood pressure, putting the cardiovascular system at risk. And a possible link between constipation and blood clots may be worth further study. In rare cases, clots form in the veins that serve the gastrointestinal organs, including the large intestine (colon). Known as splanchnic venous thrombosis, the problem seems to be far more common in people with constipation than in those without.