BMJ

The provided news articles focus on research findings related to autism diagnosis rates and the effectiveness of weight-loss medications. Neither article mentions the BMJ (formerly the British Medical Journal). Therefore, it's impossible to provide a summary about the BMJ based solely on this information. To provide an accurate summary, articles that specifically mention the BMJ would be needed. Without this information, any attempt to describe the BMJ's current newsworthiness, recent events, or relevance would be speculative and inaccurate.