Smoking, passive-smoking and tobacco-related products like ‘chewing tobacco’ still kill around six million people a year. Despite all the education, controls and stigmatisation of smokers over many decades, the casualty rate is expected to rise even further to eight million by 2030.
But humanity is likely to face an even bigger killer in the future – obesity.
Worldwide obesity has doubled since 1980. Current estimates suggest 3.4 million adults die every year as a result of being overweight.