Dr Lion Shahab is part of a tobacco and alcohol research group at the University College London (UCL)
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Chronic obstructive pulmonary disease (COPD) Breathing becomes increasingly difficult over time with COPD, with most sufferers not aware of the symptoms until theyre in their late-40s or 50s
Other effects of smoking include fertility problems, poor oral hygiene, skin problems, and an increased risk of neurological disorders
Schizophrenia also affects the way you understand what's real, but it includes other symptoms, such as trouble with speech and not being able to focus and show emotions
We think you should roll the joint how you enjoy it, so were going to teach you how to roll with and without a crutch