Just in case anyone needs a good reason to keep water and food in their car, I would suggest a careful reading of one of the hundreds of stories about the survival of Rita Chretien.
Chretien, 56, is recovering in a B.C. hospital, after spending seven weeks in the Nevada Mountains on a little more than a few mouthfuls of food a day.
She is back to eating small meals and is in fairly good spirits, according to the Canadian Press. Chretien’s husband, who went looking for help while she stayed in the vehicle, is still missing.
To get a better idea of how Chretien managed to survive — or how on Earth her body did not completely shut down — I spoke with Susan Somerville a professor of nutrition at Humber College and a registered dietitian.
“It is a pretty incredible story,” said Somerville. “She must have been really careful in how she rationed her food and she must have made sure she was hydrated and did minimal activity.”
Based on a story Somerville read with an interview with the Chretien’s son — who said his mother ate a tablespoon of trail mix, two fish oil caplets and a hard candy a day — she calculated Chretien ingested about 90 calories a day.
A recommended intake for a 56-year-old woman of a healthy weight and sedentary lifestyle would be about 1,600, she said. A weight reduction diet could put someone at about 1,200 calories a day.
So how does a woman eating 90 calories a day not perish in the Nevada Mountains?
Somerville said 70 per cent of the calories the body uses are burnt through basic functions like breathing, cell reproduction and blood circulation.
In a starvation situation the body’s basal metabolic rate, basically the mechanism that controls how much you burn and how fast to support those functions, will drop.
“So you are spending fewer calories just to keep the basic processes going,” said Somerville. It helps that Chretien was not out looking for help -- that she kept sheltered in their vehicle and fairly still, according to the stories about her ordeal.
Your body also starts breaking down your fatty tissue and lean muscle and using it for fuel, said Somerville.
“I think my students think I am a real nerd, but I am always going on about how magnificent our bodies are,” she said.
Because Chretien had a bit of glucose in her system, her body had something to use for fuel, no matter how small, before it dug too deeply into her fat and muscle, said Somerville.
She lost nine to 13 kilograms, not a lot of weight in my mind considering what she went through.
Somerville said another key thing was Chretien was hydrating with water from a local creek. She noted the recommended intake for Chretien should be about 2.2 litres a day.
No matter how it happened, Chretien’s story is flat out amazing and a really, really good reason to keep food supplies in your car. (This author's opinion: keep this stuff in your house if you don't own a vehicle.)
Somerville agrees.
“I always keep a box of granola bars,” and water in the car, she said. “Trail mix and granola bars and what we call nutrient dense foods," she said. I already have power bars in my home, but it might be a good idea to pick up some trail mix.
So she did everything right and is on the road to recovery. Hopefully they find her husband soon.
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