No. I only have about 75% confidence. But, I do have 100% confidence that Dr. Gupta of CNN news has no good reasons to think it does, and that, if it does, the mechanism is unknown.
The article's only comment about Dr. Gupta is that he uses an earpiece for his mobile phone. From that, you can divine that he's a 'moron', and 'has no good reasons' for his beliefs?
Maybe for him, a 25% chance the studies showing harm are correct (similar to your belief) is enough to justify the earpiece.
