Fact check: Rauchen verursacht keinen krebs

1. Summary of the results

The statement "Rauchen verursacht keinen krebs" (Smoking does not cause cancer) is conclusively contradicted by extensive scientific evidence. A comprehensive review of 793 studies published between 1970-2022 demonstrates significant cancer risks from smoking ^[1]:

• Strongest correlations show dramatically increased risks for:

Laryngeal cancer (375% higher risk)

Lung cancer (107% higher risk)

Other pharynx cancer (92% higher risk) ^[1]

The impact is particularly stark in gender-specific statistics, with smoking being responsible for **90% of lung cancer cases in men** and **60% in women** ^[2].

**2. Missing context/alternative viewpoints**

Several important contextual points need to be considered:

• While smoking is strongly linked to cancer, **not all smokers develop cancer** ^[3]
• Smoking can **negatively impact cancer therapies**, making treatment more challenging ^[4]
• The mechanism of cancer development involves **DNA mutations and epigenetic changes** caused by cigarette smoke ^{[3] [2]}
• Beyond lung cancer, smoking increases risks for multiple other cancers including:

Bladder cancer (40% increased risk)

Esophageal cancer (29% increased risk)

Cervical cancer (23-24% increased risk) ^[1]

3. Potential misinformation/bias in the original statement

The original statement represents a dangerous form of health misinformation that contradicts decades of scientific research. Several groups might benefit from promoting such misinformation:

• Tobacco companies have financial interests in downplaying health risks
• The statement ignores the comprehensive scientific evidence from:

793 studies over 52 years ^[1]

Multiple independent research sources confirming carcinogenic effects ^[4]

• Clear statistical evidence of cancer correlation ^[2]

The statement's simplistic denial of any cancer link deliberately ignores the complex scientific evidence showing multiple mechanisms through which smoking causes cancer, including DNA mutations and epigenetic changes ^{[3] [2]}.