Why Do People Eat Chalk, Dirt, and Other Things Not Fit to Consume

Craving non-food items is a temporary eating disorder called pica, which primarily affects children and pregnant women.

Is Eating Chalk A Real Disorder? Know Its Effect On Health

Unraveling Pica Disease: Unusual Cravings for Nonfood Items, by NirogGyan

Why do people eat chalk? - Quora

A pile of dirt makes me drool': why some people crave and eat inedible things, Health & wellbeing

People With Mood Disorders Share Same Neural Abnormalities as Those With Anxiety Disorders: Study

We Learn Best When We Fail 15% of the Time, Study Suggests

Georgia's White Dirt aka Edible Clay - Why Would You Eat That? - video Dailymotion

The highs (and mostly lows) of eating soil - Health For Mzansi

What Is Pica? - Pica Eating Disorder

Geophagia - Wikipedia