Google Correlate shows what correlates with weight loss
Google Correlate is a tool on Google Trends which enables you to find queries with a similar pattern to a target data series. The target can either be a real-world trend that you provide (e.g., a data set of event counts over time) or a query that you enter. I found a slightly good correlation between weight loss and wedding checklist. Is it surprising?
Try other medical conditions as well.