Flaxseed is known to lower blood pressure. A Canadian study found that people who consumed 30 g of flaxseed every day for 6 months had lowered their blood pressure. It was also found that it aided those who were already on some form of blood pressure medication.
A review of 11 studies concluded that consuming flaxseed daily for more than 3 months can lower blood pressure by 2 mmHg. This might seem insignificant, but even this can lower the risk of dying from a stroke by 10% and from heart disease by 7%.
It lowers the risk of heart attack.