Multimedia Appendix 3 Table 1. High vs. Low Medical Technical Jargon for each of the 10 Nutrition Myths and the introductory Question for Expert’s Posts (Translation from German). Introductory Question

To the question of a relationship between coffee consumption and the risk of developing dementia, this expert answered: Caffeine, contained in coffee, has a central stimulating effect, like other purine bases, and is said to have many positive and negative somatic characteristics. There are longitudinal studies that identify a 16% reduced risk of being affected by Alzheimer's disease (varies in German: Morbus Alzheimer). However, it is still unclear, if caffeine alone is responsible for it or if other ingredients and factors are perhaps also relevant. Coffee can therefore only possible reduce the risk. In particular, there is not sufficient evidence. Caffeine, contained in coffee, has a stimulating effect in the brain, like other building blocks of DNA, and is said to have many positive and negative physical characteristics. There are long-term studies to it. These identify a 16% reduced risk of being affected by Alzheimer's disease (varies in German: Krankheit Alzheimer). However, it is still unclear, if caffeine alone is responsible for it or if other components and factors are perhaps also important. Coffee can therefore only possible lower the risk. In particular, there is not sufficient evidence.