But no matter what genetic hand you have been dealt, you can increase your long-term health potential by living somewhat in moderation. Never start smoking. Or stop smoking no matter how long you've been smoking. It is well documented that smoking is the number one cause of heart disease. Also too much exposure to second-hand smoke can play a role in heart disease.
Smoke damages the strength of blood vessel walls.
Blood cholesterol and plaque can build up at damage sites. Preventing this initial damage is the first step to a healthy circulation. Find out if you have high blood pressure. If so, then work with your physician to lower it. This may include medications or decreasing dietary salt intake if you are salt sensitive.