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TERM 1: PHYSICS
TERM 2: BIOLOGY
TERM 3: CHEMISTRY

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So, today, during Biology, we were talking about food. In particular, there was a discussion about whether raw food is better, or cooked food is better. So, Mrs Phua pointed us to two questions, that I'm going to answer here. :)

1. Is raw food or cooked food digested faster?

You can see coagulation of protein take place on a macroscopic level when you fry an egg. The clear protein gel surrounding the yolk whitens, thickens, and coagulates into a glue-like consistency. Digestive enzymes (peptones and proteases) cannot readily break down coagulated protein molecules once they fuse together. Not only are heated proteins unavailable to your body, worse yet: the indigestible, coagulated protein molecules tend to putrefy as bacteria in the body feed upon this dead organic matter. Bacterial enzymatic by-products are carcinogenic. Coagulation occurs on a microscopic level in all cooked protein molecules whether witnessed or not.
(http://www.living-foods.com/articles/rawfreshproduce.html)

That was taken from a website talking about raw vs cooked food. It seems that, in protein especially, cooking food would cause its protein to be harder and harder to digest. Therefore, I think we can assume that raw food would be easier and faster to digest.

2. Is raw food or cooked food better?

According to the website stated above (under the 1st question), raw food does protect against Cancer. Research has shown that raw vegan diets actually decrease the toxic products in the colon, definitely contributing to our overall health. Also, when we apply heat to cook food, we actually break down protein molecules and make it hard to be digested. Not only that, but when we boil food, or use water in our cooking, the water-soluble vitamins from the food would be lost.

While all this research does prove that raw food is indeed a better and healthier choice for our bodies, one question still stands out in my mind: If raw food is so healthy, why is everyone still cooking their food?!?!

Well, my personal opinion is that raw food can easily be contaminated, and there might still be bacteria in the food. However, this bacteria is easily killed when you cook the food. Therefore, for hygiene reasons, most people cook their food. :)