Is anyone really surprised that this is happening? Nutrition is hard. Nutritionists don't get it. Would you trust a nutritionist by trade to program your pacemaker? If not, then why do you trust an engineer to formulate your food?
http://blog.soylent.com/post/152400464282/soylent-bar-powder...
If my pace maker was running better after the nutritionist tinkered, and continued to do so except for some completely unrelated issue, I'd let that nutritionist figure out the completely unrelated issue and get back to making my pace maker work smoothly, as he/she had been doing for years.