That smoking is bad for you and can do serious damage to your health is something most people are aware of. However, a new study shows one can put their body on the line with as few as two cigarettes per day. Now, scientists issue a warning that everyone should read and pass on.

Smoking has been around for a long time. Many things have changed in the last few decades; for example, you can’t smoke in restaurants, or not even in outdoor seating areas, most of the time. But still, a lot of people choose to smoke, or in many cases can’t stop, even though they might want to.

The health risks of smoking are widely recognized by authorities and experts. Per the Cleveland Clinic, smoking can affect “everything from the appearance of your skin and nails to how your tissues, organs and even your DNA work.”

It further reads that “the effects of smoking on your body start the moment you light up a cigarette,” as “thousands of chemicals released from burning tobacco start their damaging journey before you’ve even taken a puff.”