As for diet, there are many things you could do in the short term...the harder thing to figure out is what would work best for the long term. Being mostly a bland eater can be an advantage. Cut down to just fresh whole foods like meat, fruit, and vegetables. Adding in some dairy such as butter and cheese (raw is recommended) to mix things up if you desire. That means removing all processed foods such as sugar, breads, grains, cereals, seed and vegetable oils, soft drinks, alcohol, etc... Basically cut out all of the food like products being made, or what's in the middle of the grocery store(s). Just doing that helps most people to overcome many metabolic disorders. If you are one of the unlucky few, you'll then have to start to refine even further by cutting out coffee, vegetables containing oxalates, nuts, etc. Examples of meals are: bacon and eggs, steak and buttered broccoli, stew with only onion, celery, and carrots (maybe one small potato), stir fry, meatloaf (sugar free ketchup), liver and onions, fish... basically what our grandparents grew up eating. Your fat intake will need to increase to offset the reduction of carbs. Salt is not the culprit for high blood pressure, sugar is and cholesterol is not the demon it has been made out to be, it's working to repair the damage. Cutting grains and sugar should start you down the path of healing, hopefully MMS can speed that along.
If you prefer to look into particular eating styles and would like to hear testimonials, look into the keto diet. Dr Berry is a good place to start on youtube. Dr Westman is very technical, a clinician, and a great resource for those that like to get deep within the actual science (clinical trials and not the observational junk most articles reference - what creates confusion). Whole30 is another good starting point. As I stated earlier, fresh food should be the ingredients. Add salt and butter to taste, every meal doesn't need to be a transcending culinary experience...in the end, food is just minerals and energy.