The industrial age has brought us many advantages, no doubt there. There are however prices we have paid and lessons we have learnt. The most important of all maybe is that we cannot continue to exhaust resources the mother nature has given us without any concerns on the sustainability.
One of main costs of consuming industrial food is the transportation costs which is not only financial. The pollution caused by the food transport has a big share in the total pollution we introduce to our environment.
This can be much improved if we are aware of this fact, and start eating local food. Such a change cannot be a sudden change, but a gradual one. Consuming fresh vegetables, produced locally at your region, not only gives you a better taste of food and pleasure, it also helps the producers in your region to be more successful.