Several media outlets today are reporting that Walmart is promising to go lower salt, eliminate trans-fat, and lower sugar over the next 5 years. Additionally they are planning on reducing the cost of fruits and veggies.
This can have a huge impact on making healthier food more widely available. Walmart is present in a wide range of communities with limited access to healthy and affordable food options. Now the bigger question is, will this actually result in healthier food as defined by Pollan and company? The reality is that it costs more money to produce healthy food. Walmart is saying it's willing to absorb the cost and not pass that along to customers.
That means that somewhere along the way the increased cost of production is going to get passed along. The question is where that cost is going to show up? Lower wages? Reduced benefits for employees, lower profits for the producers of that food?