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About Simon Evans, PhD
Expertise
I can answer questions relative to eating for long term health - not fad dieting. I can also answer questions about nutritional supplementation, including qualities to look for and things to stay away from.

Experience
I am a research scientist at a major medical school studying the interaction between nutrition, exercise and mental health. I focus on lifestyle choices that affect the way you think and feel, and that control your energy, stress and productivity.

Organizations
The Society for Neuroscience. The American Society for Nutrition.

Education/Credentials
I have a PhD in Molecular and Cellular Biology and have been in the neurosciences for over a decade.

 
   

You are here:  Experts > Health/Fitness > Eating Disorders > Nutrition & Dieting > change of nutritional value during preparation

Nutrition & Dieting - change of nutritional value during preparation


Expert: Simon Evans, PhD - 4/23/2007

Question
Hi!
I like to prepare my potatoes like this: Cut them in small chips and bake them
in the oven at 200(degrees celcius(392fahrenheit) for 20 min. (they get crispy
but not burned or black).
I was wondering if there was a change in nutritional value during this
preparation, and how this would compare to just boiling the potatoes in
water.

I have also been wondering about the same thing in regard to vegetables. Is it
better to eat them raw or is it ok to boil them?

PS
IF you know a website where they discuss these kinds of things a hyperlink
would be most welcome.

mvh Rasmus Hertzum-Larsen  

Answer
Rasmus,

Baked potatoes will maintain more nutritional value than boiled - so keep doing that.

As far as veggies go, raw is best. If you want to cook them you should steam them briefly and not overcook. Boiling them will destroy and/or remove many of the vitamins and other nutritional components. Much of the good stuff in all veggies is destroyed by heat. Microwaving is no good either.

Hope this helps.

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