I grow my own wheat-grass.
A two ounce shot glass has something like the equivalent to 20 pounds of fresh fruit and vegetables.
For people like me with health issues, there is no super food stronger.
Since you have at least 1 son, I think growing it would be a fun project.
You would need to buy RED WINTER BARRY wheat from whole foods,
one pound of seed is about a 1.00 $
Peace