Is Smoking less than ten cigarettes a day harmful to health?

Any amount of smoking is harmful to your health. Ten cigarettes a day is most likely not as harmful as smoking, say, a pack a day. But it's still FAR worse than not smoking at all. Furthermore, since there have been few studies when it comes to light smoking, it is difficult to say how the dangers of smoking, say, 10 cigarettes a day compares to smoking a pack a day.