1 doctor weighed in:

Why do I get light headed after smoking?

1 doctor weighed in
Dr. Carla Enriquez
Pediatrics

In brief: Many reasons

Inhalation of cigarette smoke infuses carbon monoxide, particulates, nicotine, carbon dioxide, and many other gases into the lungs with almost instantaneous absorption into the blood (bolus effect) going right to the brain, leading to transient decreases in brain oxygen.
This causes dizziness or syncope.

In brief: Many reasons

Inhalation of cigarette smoke infuses carbon monoxide, particulates, nicotine, carbon dioxide, and many other gases into the lungs with almost instantaneous absorption into the blood (bolus effect) going right to the brain, leading to transient decreases in brain oxygen.
This causes dizziness or syncope.
Dr. Carla Enriquez
Dr. Carla Enriquez
Thank
Get help from a real doctor now
Dr. Marsha Davis
Board Certified, Internal Medicine
24 years in practice
67M people helped
Continue
108,000 doctors available
Read more answers from doctors