Point #2 is a big important point. The media does not select relevant issues, they chose issues that play well to the public. Sometimes these overlap, but often they do not. GMO is a good example, because it is reported as monolithically important, but each genetic modification has to be considered individually; considering GMOs as a unified group is not very useful. Likewise, if you are interested in health and nutrition, you should also look for vegetables that are grown to be nutritious, which includes many GMO but not others: many plants are modified to look better, not be healthier; but many plants are modified to be more nutritious, not look better; etc. Moreover, you can also get some benefit in nutrition by ignoring the GMO debate and looking at things like soil health (organic works as a vague proxy for this, but again, 'organic' is a media chosen label, and so is touted as Very Relevant In Every Way and also does not limit itself to soil health) or time-since-harvest (locally grown, proxy, media pollution, etc.)