Raw or Cooked Food: Which Option Grants More Nutrients? 

by The Health Sciences Academy — Get free science updates here.

There are many benefits to consuming raw vegetables, which give you plenty of micro-nutrients and antioxidants.

In contrast, deep frying destroys antioxidants and also poses a risk to your health: oils heated at high temperatures release free radicals, which can injure cells and DNA in your body.

Now, does this mean that we should eat only raw food and exclude cooked food all together?

Not necessarily.

Cooking is crucial to our health and raw vegetables are not always more nutritious.

To cook or not to cook

Let’s take the example of tomatoes.

Research shows that cooked tomato products have higher available levels of cancer-fighting lycopene and antioxidants than tomato in its raw form.

Cornell University researcher Rui Hai Liu found that lycopene levels rose 35% after cooking tomatoes for 30 minutes at 88 degrees Celcius.

Cooking vegetables also seems to have a positive effect on some antioxidants by increasing their bioavailability, particularly carotenoids found in carrots, cabbage, bell peppers, spinach, kale and asparagus.

On the other hand, studies show some veggies, including broccoli, retain more glucosinolate (a DNA-protective phytochemical) when raw or lightly steamed.

The query of raw or cooked food does not have a straightforward answer, as you’ll see.

So which option grants more nutrients?

Raw foodists contend that enzymes in raw foods enhance digestion and fight many chronic diseases. However, science isn’t so definitive on eating a diet entirely based on uncooked foods.

When it comes to cooking and nutrient retention, four of the biggest factors are that it largely depends on:

  • the actual food (e.g. carrots)
  • the length of cooking time (e.g. 15 minutes)
  • the cooking method (e.g. boiling)
  • the nutrient analysed (e.g. beta-carotene)

Let’s break it down and give you the facts. You’ll then have a clearer picture on which to make a decision.

Cooked food considerations

As we said, two of the biggest determinants of which is better rests on how you cook the food, and for how long.

Heat can break down and destroy 15-20% of some vitamins in vegetables – especially vitamin C, folate, and potassium.

The influence of cooking on antioxidant activity evaluated in 20 vegetables has shown that pressure-cooking and boiling lead to the greatest losses. What produced the lowest losses? Griddling, microwaving and baking.

In another study done on the health-promoting compounds of broccoli, all cooking treatments, except steaming, caused great losses of chlorophyll and vitamin C. Only boiling and stir-frying caused the loss of total carotenoids.

You also need to consider which specific nutrients you want to get more of. For instance, boiling carrots increases their carotenoid levels. However, they completely lose their polyphenols after boiling. So, if it’s the polyphenols that you’re after (rather than the carotenoids), you’re better off eating them raw.

Raw food reviews

It is said that raw vegetables are a ‘live food’. In other words, they contain life energy. Virtually all living things emit particles of light known as biophotons or ‘sun energy’, which contribute to the idea of live food. It’s worth a mention; however, since this is impossible to find in science-based published findings, we’ll leave it at that.

Here are three facts that we note to acknowledge that plant-based diet components, whether you eat them raw or cooked, can provide protection and reduction of certain health issues:

  1. Eating vegetables (raw or cooked) provide us with fibre, which absorbs bile acids and cholesterol. This reduces the risk of developing heart issues.
  2. Health benefits of vegetables also include disease-fighting phytochemicals, maintenance of bowel health, and in people with diabetes, fibre can help slow the absorption of sugar and help improve blood sugar levels.
  3. Enhancing your diet with plant foods can lower the risk of developing certain cancers.

Expand your nutrient density and diversity

It is a challenge to present one definitive answer to the enquiry of cooked versus raw. There are many, many variables that do not provide an apples-to-apples comparison, if you will.

As a matter of fact, one of the major studies guides us to recognise that none set out to directly compare the effects of the same vegetables eaten in their raw versus cooked state.

One common thread in quite a few of the publications and studies included this recommendation:

The public should be encouraged to increase their vegetable intake and to consider eating some of them raw.

It might be a wise choice to expand our micro-nutrient density, absorption of plant protein, and our nutrient diversity by including conservatively cooked food in our diet.

A general conclusion from a majority of the studies? The best vegetables will be the ones that you eat!

How about you? Have you you found success with either raw or cooked food? Or do you include a blend of both cooked and raw in your diet?

Let us know in the comments below! And if you know someone who is confused by the raw or cooked food dilemma, please share this with them!

The-Health-Sciences-Academy-Alejandra-Ruani-small1-right Alex Ruani, Doctoral Researcher, is the Chief Science Educator at The Health Sciences Academy, where her team of accomplished scientists and PhDs are training a new breed of over 100,000 highly-specialised nutrition professionals who are leveraging the latest personalisation strategies to help their clients. She is a Harvard-trained scientist and UCL Doctoral Researcher who is fanatical about equipping health professionals with the latest science-based tools so they can succeed in their practices – from identifying the unique nutrient needs to building highly personalised nutrition programs. Besides investigating and teaching the latest advances in health and nutrition biochemistry, Alex makes it easier to be smarter with her free email updates.

Did you enjoy this? Sign up to receive our FREE email updates!

See Also

Continuing Education Bundle

Free Academic Tour

Exclusive Webinar

[CPD Certified Webinar] Child and Family Nutrition Strategies for Your Practice

“How do I know if my child is getting all the right nutrients for proper growth?”

 “Should I worry about feeding my kids the wrong foods for learning and mood control?”

“Our family dinner is a tantrum-loaded warzone… is picky eating solvable at all?”

Speech challenges, learning delays, stunted growth, irrational tantrums, short-fused aggression, hyperactivity, a lack of attention… they can all have a dietary element underneath.

What a little boy or little girl eats can deeply affect their mood, memory, and brain development – with long-lasting consequences carried into adulthood.

So how does diet shape a growing child? And in what ways may you help parents, caretakers, and teachers with the nutrition of little ones?

Completing this CPD-certified training will equip you with vital knowledge underpinning how food can impact your client’s child neurologically, emotionally, and intellectually – alongside insights about adequately running child nutrition programs to best support little boys and girls with their developmental needs.

Here’s what you will discover in this CPD Certified Webinar:

  • Why nutrition and health practitioners should gain a deep insight into child nutrition science when working with parents, caretakers, and teachers
  • Importance of custom-building child nutrition plans considering gender, age, height, weight, and other calculations
  • How adding child nutrition programs to your practice can help clients with the developmental needs of their little ones
  • Advantages of becoming an Advanced Child and Brain Development Nutritional Advisor™ and integrating child nutrition into your work with our Level 5 Certification
  • Personalisation methods and planning tools to use when running your own child nutrition programs to support parents, caretakers, sports clubs, and schools

Remember you have the option of claiming your smart CPD certificate when you complete this webinar!

Register Now

© Copyright

Everything on this site is original content, created and owned by or through The Health Sciences Academy ® or licensed accordingly.

The Health Sciences Academy is the world’s largest, 100% science-based, online educational institution.

✔ helping health professionals build their expertise in specialised areas             ✔ raising industry standards through personalised nutrition and practical science.
© Copyright The Health Sciences Academy. The content, graphs and charts on this page have been exclusively prepared for The Health Sciences Academy and its prospect students, existing students and graduates. None of the content on this page and website may be reproduced, copied or altered without our explicit permission. Criminal and legal penalties for copyright and other infringement apply. All Terms and Conditions apply.


Free Courses



About Us

© 2022 The Health Sciences Academy ® All Rights Reserved.

Client certifications

"My certifications with The Health Sciences Academy have taught me to use and understand many scientific methods and they are invaluable when it comes to implementing what I have learned into my business. I got clearer on the direction of my company. I wouldn’t be where I am now without them!"
Christopher Barker
Founder of The Lifestyle Clinic
"I've started a business based on helping people create the healhiest, most able-to-thrive babies possible with the building blocks being my learnings with The Health Sciences Academy. I'm just so thankful for the education and for the amazing team that helped me! For me it's been life-changing."
Rochelle Serna
Founder of The Non Tox Shop
Send this to a friend