> There weren't regular, organized, multithousand data point case studies back then.
Case studies can't spot harm faster than the harm occurs. The main harm from smoking is a significantly increased risk of lung cancer and other illnesses which can take decades to show up. That's why even with modern medicine advancing over the last century it took so long to nail down the health risks of smoking.
Case studies can't spot harm faster than the harm occurs. The main harm from smoking is a significantly increased risk of lung cancer and other illnesses which can take decades to show up. That's why even with modern medicine advancing over the last century it took so long to nail down the health risks of smoking.