Black salt is widely used in sub-continent and some other countries like UK, USA, in sub-continent mostly it is used without proper processing or directly with different shapes of foods like Fruit-Chat (Fruit salat), Dahi bhalley, most people take it or spread it directly on the fruits or salats to enhance the task of their foods but outside the sub-continent, it is mostly available with the proper processing and in proper packing and with least impurities.
In the sub-continent especially in India, it is also used in some herbal medicines called Ayurveda.
Ayurvedic medicine ("Ayurveda" for short) is one of the world's oldest holistic ("whole-body") healing systems. It was developed more than 3,000 years ago in India.
It's based on the belief that health and wellness depend on a delicate balance between the mind, body, and spirit. Its main goal is to promote good health, not fight disease. But treatments may be geared toward specific health problems.
It is also used as Laxative, Laxatives, purgatives, or aperients are substances that loosen stools and increase bowel movements. They are used to treat and prevent constipation.
Laxatives vary as to how they work and the side effects they may have. Certain stimulant, lubricant, and saline laxatives are used to evacuate the colon for rectal and bowel examinations and may be supplemented by enemas under certain circumstances. Sufficiently high doses of laxatives may cause diarrhea.
Other video links discussed in this video:
1. SALT (Namak) || 8 interesting facts || Urdu/Hindi:
https://youtu.be/fORe0kIGmFs
2. Pink Himalayan Salt | Benefits | Surprising facts | Urdu/Hindi:
https://youtu.be/qpqAO5CPNug
3. Salt for high Blood pressure patients | Lo salt || Urdu/Hind:
https://youtu.be/v96vQeby-Zc