An 80-year-old woman in India stunned the world when she admitted that she has been eating sand and gravel for the last 65 years.

Kusma Vati from Varanasi, India, first ate sand to ease an upset stomach. She was 15 at the time. Since then, sand and gravel have become a part of her diet.

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While many, her grandchildren included, question the side effects this addition to her diet may have on her overall health, Vati claims that it’s the reason why she has is healthy and strong and has managed to live a long life.

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“I haven’t seen a doctor,” she said, in a report by Yahoo News. “For as long as I can remember, I’ve felt perfectly fine.

“I feel as though the minerals in the sand give me the energy to work in the crop fields.”

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Vati first gathers the sand and gravel, stores it in a clay pot and allows it to dry completely before consuming it. When she is unable to get sand she opts for stones which she gets from the walls of her house.

She chews the sand and gravel and attributes this to her strong teeth which she claims can bite into the “hardest stone”.