Natural radiation negative effects are visible in environments different from just the medical one, for instance in the agro-food environment. In the last few years, many tests were performed and they have all shown the negative effects on the examined products.
To start with, a few years ago, an interesting test was performed on wine: In the presence of 10 sommeliers, a few wine bottles from Cantina Franciacorta near Brescia were selected, without them knowing, some glasses were placed on micro-areas affected by ground natural radioactivity (about 1 micron thick); the result was surprising: all the sommeliers thought that the organoleptic characteristics of the wine placed on radiation (even for just a minute) had been deeply modified!