Risks of too little sodium are a valid concern only at levels massively below mean intake in the U.S., while the harms of excess are with us right now. The priority, obviously, is fixing what's broken. Kudos to the FDA. Their action on salt does not yet have traction in the real world -- but it does pertain to it.
Where the likes of this pizza and sandwich, and soda and donuts and French fries are introduced, health is devastated, and in short order. Where just this sort of fare is removed to make way for more vegetables, fruits, beans, lentils, whole grains, nuts, seeds, and water when thirsty, the improvements in health are stunning.
What the New York Times tells us today, no surprise to those of us who have worked directly with severely obese patients over the years, is that failure overtakes the show participants, too. Those of us in these trenches have known all along that though challenging, weight loss is rarely the rate-limiting problem.