There’s an excellent book - Super Gut by Dr. William Davis you can get on Amazon. It’s very helpful.
And eating healthy isn’t an option. Eating healthy is a must to avoid all kinds of health issues.
Get educated about the food in our country and all the additives, preservatives, sugar, chemicals etc that make US food the most unhealthy.
Read ingredients on everything you look at at the grocery store. Know what you’re putting in your body.
As a general rule, avoid sugar, gluten and processed dairy items (go for 100% sheep or goat milk products, grass fed butter, Greek yogurt.)