I often see online people say that less salt / sodium is healthier. For example, this Reddit post. However, I just watched this YouTube video claiming that less salt / sodium is actually significantly more harmful than the harms from too much salt / sodium. Unfortunately, the studies referenced by the YouTube video aren’t provided in the video description, so I couldn’t check if they actually support his claims + are reputable. So I’m hoping a professional can verify whether or not this YouTube video is accurate.
Plasma and urinary norepinephrine values at extremes of sodium intake in normal man is the study (link to pdf).