We do not know if the medical researchers consider the salt needs according to regional needs. The WHO report may be based on research done in North America or Europe, where for the most part it is colder than say India. Here we sweat a lot, and a lot of salt goes out with it. So, while the WHO recommends less salt, for us it would not be good to follow that. It is a problem that is not addressed. That puts the people in a dilemma on how to go about it.
Another issue with such research and recommendations by WHO is a commercial one. That UN body is supported by pharma companies either directly or with governmental/pharma support. The finger is on the scales. They may recommend massive drives for this disease and that while it may not at all be necessary. The most recent medical/pharma exploitation is in the lowering of the BP level from 140 to 130. This netted a 11% of the US population, which works to about 33 million. When this comes to India, the % may be the same but the people in the net will be about 130 million; which means huge sales for some select few and a profit that will keep producing more as the BP medicines are to go on for long term till death.
Our bodies are quite capable of fixing itself up for the most part, as we keep peace within and stay positive and active physically. Avoiding the fear-inducing factors of these medical research and seek out genuine doctors/clinics/hospitals who could prevent you falling into the traps. As always prevention is better than cure.
Its always been a stationary Flat Earth for @ 6000 years.