By Neil Shaw & Rom Preston-Ellis The seemingly ‘harmless habit’ of smoking cannabis has been linked to a 42 per cent increase in stroke risk, according to new research. Experts have expressed concerns about the growing perception of marijuana as harmless, pointing out that Germany has recently made the decision to decriminalise the substance. However, the study warns that daily users could face a higher risk of cardiovascular disease – and they are at a 25 per cent increased risk of heart attacks and 42 per cent more likely to have a stroke. These dangers exist even when factors like tobacco u…