1. Smoking.

Doctors have known about smoking as a risk factor for heart disease since the 1960s, but it still accounts for one-third of all fatalities from the condition.

Cigarettes contain 5,000 different compounds, many of which are detrimental to your health when inhaled. Carbon monoxide is one of these substances. Inhaling carbon monoxide affects your heart by reducing the quantity of oxygen available in your red blood cells. Another risk factor for heart disease is an increase in cholesterol levels in your arteries.

Read more>>https://medicalcaremedia.com/5-habits-that-are-very-dangerous-to-the-heart/

Thanks for the Awareness sir