Another thing they are failing to consider is the fact that birth defects from lack of folic acid is a problem primarily among those living in poverty. Fresh veggies and fruits are expensive, and the poor tend to live on refined carbs which are cheap. The poor had diets which were low in folic acid not because they were eating bacon and eggs instead of greens, but because they were eating pasta instead of greens.

The answer to this problem was to fortify grains with some nutrients, so this way the poor would be a little healthier. This obviously worked in preventing some defects, and will continue to work as the poor can't afford to stop eating grains. It is the middle classes who can afford the fatty bacon and cream, however these middle classes are not in any danger from losing the nutrients from fortified foods, as they can also afford expensive multivitamins and veggies (which are encouraged on LC plans).

The poor, on the other hand, will still continue to buy what they can afford and it is unlikely that LC diets will make much of a dent in their eating habits.