I ate nothing but <insert some food> for 3 months and now I’m an expert on the dietary effects of every food on every person with every condition. 

 My newsletter is only 29.99 per month. A bargain really. With all I've learned by only eating <insert some food> 

 For an extra $5 a month I’ll also teach you how to be a social media expert like me. 

 Throw in another 20$ and I'll send you my book. It's titled. "I'm an expert on <insert some food>"