Craving non-food items is a temporary eating disorder called pica, which primarily affects children and pregnant women.
Pica: This Rare Eating Disorder Make Children Crave Non-Food Items Like Clay, Paper, Dirt
Geophagia - Wikipedia
They say it's edible soil. What? : r/geology
Pica Disorder: Eating Chalk, Dirt and Soap? - California Prime Recovery
Crave Dirt or Chalk? HERE'S WHY!! – Dr.Berg On Zinc Deficiency & Low Iron Levels
Georgia's White Dirt aka Edible Clay - Why Would You Eat That? - video Dailymotion
Should You Be Worried If You've Been Eating Chalk?
Geophagy: Why do some people and animals eat dirt? - Big Think
The Down and Dirty, from The Bitter Southerner — THE BITTER SOUTHERNER
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Chalkovsky Obsidian Edible Clay - Crispy Clay Chunks for Eating - Edible Chalk for Pica Cravings, Unique Pica ASMR Collection- Ready-to-Eat Clay
Do You Crave Dirt or Other Non-food Items?: The Soho Center for Mental Health Counseling: Psychotherapists
PDF) Chalk eating in middle Georgia: A culture-bound syndrome of pica?