General health advice.
Stick with as close to organic foods as possible. I know it may not be easy to go 100% organic for certain types of foods, due to the current day market. Which is why I suggested to stay as close as possible.
If you can, go for as close to 100% organic with the following.
a. fruits b. leafy greens/veggies c. organic fish over chicken such as Salmon d. seeds and nuts. Such as Almonds, cashews,
If you're going to mix your drinks try to do so organically, such as by the slice of lemon on a cup. Tea is generally safe, especially green tea and black tea, which are known to be pretty healthy.
If you eat snacks or candies, you can do so, but check ingrediants that are put into your treats. Make sure there isn't anything that raises a red flag, then check online to see if it doesn't reach a red flag with anyone online. If it comes down to it, talk with a nutrition expert if the internet doesn't seem to answer any question you may have.
edit: what's wrong with this comment. i'm not saying to buy into any u.s foods, just generally, how to know if a food might be healthy. Regarding food safety.