Like a Bowl Full of Jelly

Whereas previous articles warned of an obesity epidemic in the US, recent articles assert that the issue is a world-wide concern. So I started wondering if the increase in obesity (requiring larger clothes) and the tendency to dramatically fluctuate in weight during efforts to reduce weight (causing greater turnover in clothes) have influenced the textile market. And, if so, have any textile consortia figured this out to the extent that they might be promoting companies that either facilitate weight change through whatever mechanism?

I can't find anything online to suggest an answer to these questions.