The most common withdrawal symptoms from stimulants include, but are not limited to: Inability to feel pleasure or satisfaction in life Damage to heart and circulatory system Low motivation, attention, and focus Fatigue Insomnia and other sleep disturbances Depression and other psychological disorders Anxiety and panic attacks Other effects on the body include: Malnutrition Fertility problems PMS difficulties and premature menopause Impotence and other sexual dysfunction When stimulant use has been chronic or used in high doses, withdrawal symptoms may worsen and include heart failure, stroke, extreme aggression, and severe mental health concerns such as: psychosis, hallucinations, and paranoia

The higher values for specific diseases might reflect the higher impact of air pollution on sensitive individuals with pre-conditions (and in the context of this calculation, a healthy person smoking one pack of cigarette will have less acute health conditions than an asthmatic individual smoking the same quantity)
Six months is no exception
TAREYTON I used to cut lawns for a woman who smoked Tareytons by the carton, I always wanted to steal a pack, but never did