"Pulse as a biometric measure of wellbeing"

"Pulse rates have been overlooked as a potentially valuable way of capturing individuals’ wellbeing. The value of pulse rate as a wellbeing metric is that, unlike subjective wellbeing metrics, it is recorded on an objective cardinal scale. This column uses empirical analyses of the English and Scottish Health Surveys and the 1958 National Child Development Study to show pulse is highly correlated with subjective wellbeing, that pulse equations look very similar to those for subjective wellbeing, and that pulse is predictive of subjective wellbeing and labour market outcomes later in life."

"Medical dogma is that people with heart failure need to adhere to a low salt diet."

But a randomized trial reported in the Lancet doesn't show a statistically significant benefit. However, the Twitterati have a few doubts about the generalizability of the study.

Related: this 20-year-old paper, coauthored by noted Cal-Berkeley statistician, David A. Freedman, "Salt and Blood Pressure: Conventional Wisdom Reconsidered". Years ago when I first read it, I found it impressive, but I haven't kept up with any subsequent developments.