One extra little detail is what your food was exposed to in terms of chemicals, toxins, or manipulation (such as irradiation or genetic modification) which can make all the difference between a food that is healthy and a similar food that is damaging to your health.
One such suggestion I like to make is to avoid being exposed to toxic chemicals, especially in regard to your food. One of the most prominent and dangerous herbicides used on food crops is Roundup (also known as glyphosate, and found in many other brands of herbicides).
Even though Roundup is promoted as safe, it can have severe adverse health effects as found in recent research, including birth defects, spontaneous abortions, infertility, hormone disruptions, neuro-degenerative diseases and cancer (especially Non-Hodgkins lymphoma). It also gets into the environment, animals and the water supply, causing more issues.
Roundup is also sprayed on cereal (ie wheat and corn), soya and canola crops to kill the plants to make it easier to harvest them. Unfortunately this leads to the chemical being present in your foods - breakfast cereals, breads, bakery products and canola oil. This is one reason why I do not recommend people to eat wheat, corn, soy, or any processed foods with canola oil - unless it has been tested and approved as "organic".
Also avoid Roundup in your gardens, as it can be absorbed through your skin to have the same effect. Have a look online for safe, natural herbicides that you can cheaply and easily make at home, or just pull your weeds out by hand!
Research into Non-Hodgkin's lymphoma linked to glyphosate use by farmers:
Greenpeace report on Roundup/glyphosate: