This is about a 26 year old friend of mine but i want to know what are the consequences of smoking weed on a daily basis?

Many potential: Marijuana smoke contains bronchial irritants. Inhalation with marijuana is more prolonged & deeper than with tobacco. Higher combustion temperatures are reached because it is smoked to a shorter butt. This leads to a carboxyhemoglobin concentration that is 5 x ^ than tobacco. 3 x more tar is inhaled. Prolonged use of cannabis can lead to airway inflammation, wheezing & ^ in sputum production.

Bad stuff can happen: Smoking (inhaling smoke, which is full of lung irritants and cancer-causing chemicals) of any kind is unhealthy. Weed is illegal under US federal law, so one can be put in jail or convicted of a crime. Having a conviction has bad side effects, such as problems getting a new job or the inability to cross borders for a vacation. Jail has its own dangers such as getting beat up or sexually assaulted.