1. Excessive Thriftiness:  Many people, especially older individuals, hesitate to throw away food or household items even if they are spoiled or moldy. This can increase the likelihood of exposure to aflatoxins, which can damage cells and potentially lead to liver cancer.

2. Love for Barbecue: Grilling fatty foods at high temperatures can produce harmful substances, such as benzopyrene, which are linked to liver and stomach cancer.

3. Phone Use before Bedtime: Many people spend time on their phones before going to sleep, but this can disrupt sleep quality and potentially lead to insomnia. 

4. Overusing Medications: The liver plays a crucial role in processing and metabolizing medications. Some prescription drugs contain higher levels of toxins compared to others, so caution must be exercised when taking them.