[wiredone]

Your comment is incredibly ignorant, and positions opinion as fact.

It sounds like this friend of yours was taking a biologic like Remicade. People take these medications (Humira, Remicade Embrel etc) because they have immune system issues - to make a statement that these things are all caused by "bad living" makes it clear how uninformed you are on the topic.

Immune system conditions are also renowned for coming in waves - people can go into remission for years without a strong link to causation, making changes in diet and lifestyle often appear as if "it was definitely eating hamburgers that gave me eczema/arthritis/crohns disease.

The truth is, the medical community doesn't know the cause of these diseases yet, other than potentially linking these diseases to a reduction in "things for your immune system to do" due to our overly clean and sterile living conditions compared to past centuries.