“Sulfur
Sulfur is present in all the cells and extracellular compartments as part of the AAs cystine, cysteine, and methionine. The covalent bonding of sulfhydryl groups between molecules forms disulfide bridges, which are responsible for the tertiary structure of proteins necessary for the function of certain enzymes, insulin, and other proteins. Sulfur is a component of heparin, chondroitin in bones and cartilage, thiamin, biotin, pantothenic acid, and S-adenosyl methionine (SAM-e). It also is a part of glutathione, an important antioxidant.40
Sources of sulfur include animal proteins, legumes, broccoli, and nuts. Sulfur levels are not monitored clinically. No recommended intake has been established.”
https://www.sciencedirect.com/topics/nursing-and-health-professions/sulfur
But if you are drugged out dirt poor might be easier to dig up bones. Or perhaps you think you get the best high with dead bones.
There may be a premium for drug maker to buy up cheap bones.
Barter system. Bring me a full skeleton and I will give you one dose of Kush or some such thing
“An official from Freetown Municipal Council told West Africa Democracy Radio that armed police were being deployed to protect cemeteries in the Sierra Leonean capital after graverobbers harvested bones from several corpses over night.
Sierra Leone Ministry of Health chief, Harold Thomas, told the radio station: ‘They are also even using bones of dead people to actually make these compounds so they can smoke. It’s a menace to society.’
In the past few weeks, police have supercharged efforts to combat graverobbing. Detective Ahmed Sheku Turay said that officers have targeted graveyards in Freetown’s Racecourse Cemetery where people known as ‘Kush Boys’ have been found tampering with graves, local news website Sierraloaded reports.
revealed that recent operations have targeted graveyards in Freetown’s Racecourse Cemetery, where individuals known as Kush boys have been tampering with graves.”
https://www.dailymail.co.uk/news/article-13278719/kush-zombie-drug-Sierra-Leone-police-cemeteries-human-bones.html
Or maybe they just tell the addicts that because they think it's hilarious.