A recent meta-analysis suggests that <3g/day is actually worse than consuming 4-5g of sodium each day. This held true for people without hypertension and for people with hypertension. People with hypertension had worse outcomes if they consumed >7g/day, but actually the worst outcomes at <3g/day, and best outcome with 4-5g. People without hypertension did not have worse outcomes at 4-5g or >7g/day, but did at <3g/day.
American Heart Association’s response to the article: http://newsroom.heart.org/news/american-heart-association-strongly-refutes-study-findings-on-sodium-consumption
The AHA’s main contention is the possibility of confounding factors; that sick people or unhealthy diets are related to <3g/day sodium intake and those are the cause. However the results of the meta-analysis remain significant when researchers control for past cardiovascular disease, which makes the confounding factors argument somewhat weaker.
What do we think about this?