There's been less research on it but smoking cannabis is likely to have many of the long term physical health risk as smoking tobacco (even if you don't mix the cannabis with tobacco). So smoking cannabis can also;

the environment you're in (you're more likely to feel paranoid or anxious if you don't feel comfortable where you are or if you're with people you don't trust) Also known as grass, weed is made from drying out the leaves and flowering parts of the cannabis plant. It can look like dried herbs and is usually brownish-green in colour. Skunk This is the name given for particular strains of grass that are very strong. Skunk’s become very popular in recent years and is often bright, pale or dark green in colour and covered in tiny crystals. Hash/hashish Tobacco is often mixed with cannabis, for making joints or smoking bongs. If you mix cannabis with tobacco you’ll be taking on the same risks you get from smoking tobacco. The effects of cannabis can vary massively. Some people say feeling 'stoned' makes them feel chilled out and happy in their own thoughts, while others say it makes them giggly and chatty. But it can also make people feel lethargic, unmotivated and some people become paranoid, confused and anxious.Although not all cannabis is cut, it’s very hard to know when it is or isn’t – so you could be smoking, eating or vaping chemicals from all sorts of unknown substances, including pesticides used when growing the cannabis.

Have problems concentrating and learning new information. This is because studies suggest that cannabis effects the part of the brain we use for learning and remembering things. The other important compound in cannabis is CBD (cannabidiol). Skunk and other forms of strong cannabis contain high levels of THC but very little, or no, CBD. it’s the first time you’ve been caught with an illicit drug and you have no previous record of offence This depends on how much you smoke. Generally, the effect is strongest for about 10 minutes to half an hour after smoking cannabis, but if you smoke a lot, you may still feel stoned for a couple of hours. If you eat cannabis, the peak effects can last for 2 to 4 hours, and there may even be a few more hours before the effects wear off completely. After effects:increase your heart rate and affect your blood pressure, which makes it particularly harmful for people with heart disease

If you’ve used cannabis as a one-off, it will show up in a urine test for around 2 to 3 days afterwards. The hallucinogenic effects of cannabis are mainly due to a compound in cannabis called THC (tetrahydrocannabinol). This method has become more popular in recent years. Most people use a vapouriser which heats the cannabis, rather than burning it. Very little is known about the health impact of vaping cannabis. Ready-made vapes and vape juices, like nicotine ones but claiming to contain cannabis chemicals like CBD (legal) and THC (not legal), are also available but illegal vapes might contain synthetic cannabinoids instead. Cannabis can make some people giggly and chatty, and other people paranoid, confused and anxious – it really depends on the type of person taking it and the circumstances they take it under.This means that a police officer can choose to issue you with a street warning only (which doesn’t form a criminal record, though it will be recorded), so long as: In the UK, most people mix it with tobacco and roll it into a cannabis cigarette known as a spliff or joint. Some people don’t use tobacco at all and make weed-only spliffs - either because they prefer it that way or to avoid becoming dependent on nictotine. Smoke bongs Cannabis changes how you think and some people say it gives them a different perspective on things. It does affect your judgement though and people often think conversations or thoughts they have (whether good or bad) are much more deep or important when they’re stoned than they would do normally.