People who are married have lower rates of several cardiovascular diseases compared with those who are single, divorced or widowed, according to research. The relationship between marriage and lower odds of vascular diseases is especially pronounced before age 50. For people aged 50 and younger, marriage is associated with 12 percent lower odds of any vascular disease. This number drops to 7 percent for people ages 51 to 60 and only 4 percent for those 61 and older.