Hello Nick,
Thank you for your email. I see you are concerned about drop in the
Quality Score of your ads.
Having reviewed your ad and site, we've found that it is currently
ineligible to run. Due to multiple complaints from our users and
publishers, we are disallowing certain categories of ads from being
syndicated on our networks. This includes, but is not limited to, certain
dieting and weight loss-related advertisements. Google strongly believes
in providing a positive and useful experience for users and advertisers.
Also, note that the low Quality Score of your keywords is because your
landing page quality is poor.
Users have consistently provided negative feedback on several types of
website. In our commitment to make AdWords as effective as possible for
advertisers and users, ads promoting these types of websites may receive
low landing page quality scores. In some instances, they will not be
allowed to run.
Website Types to Avoid
Dieting or weight-loss websites
Data collection sites that offer free items etc., in order to collect
private information
Arbitrage sites that are designed for the purpose of showing ads
Affiliate sites that the primary purpose of which is to drive traffic to
another site with a different domain
"Get-rich quick" sites
Malware sites that knowingly or unknowingly install software on a
visitor's computer
Poor comparison shopping or travel sites whose primary purpose is to send
users to other shopping/travel comparison sites, rather than to provide
useful content or additional search functionality