Methylmercury contamination in fish, along with fish consumption advisories, has the potential to disrupt people's eating habits, fishing traditions, and the livelihoods of people involved in the capture, distribution, and preparation of fish as a foodstuff for humans.[31] Furthermore, proposed limits on mercury emissions have the potential to add costly pollution controls on coal-fired utility boilers. Therefore, the methylmercury issue has attracted the attention of many levels of government (see selected external links), environmental groups,[32] consumer advocates, science groups,[33] food-industry-funded groups that question the science,[34] and significant interest from electric utilities.