In the vast majority of cases, nothing, as the mutations will likely be silent. In the worst case, a point mutation could possible lead to the development of a

In the vast majority of cases, nothing, as the mutations will likely be silent. In the worst case, a point mutation could possible lead to the development of a cancer. But remember, the article says this has been going on all the time as natural process. It's not new. So no increased risk from this process.