Should you eat vegetables raw to get the most nutrients? Or does cooking make them healthier?
Both raw and cooked vegetables can be excellent choices. Cooking changes some nutrients, but it can also make certain beneficial compounds easier for the body to absorb.
The World Health Organization (WHO) recommends eating a variety of vegetables and fruits. It does not recommend eating all vegetables raw.
Which Nutrients Are Better Preserved in Raw Vegetables?
Some vitamins are sensitive to heat and water.
Vitamin C and certain B vitamins may decrease during cooking, particularly when vegetables are boiled for a long time and the cooking water is discarded.
Raw peppers, tomatoes, carrots and leafy greens can provide valuable nutrients without cooking.
However, the amount of nutrients retained depends on the vegetable, cooking time and preparation method.
Can Cooking Make Vegetables More Nutritious?
Yes, in some cases.
Cooking softens plant cell walls, making certain nutrients easier to absorb.
For example, cooking tomatoes can increase the availability of lycopene, a naturally occurring plant pigment.
Cooking carrots may improve the availability of some carotenoids, which the body can use to produce vitamin A.
This does not mean that cooked vegetables always contain more nutrients. Rather, some nutrients become more accessible.
What Is the Healthiest Way to Cook Vegetables?
Gentle cooking methods are generally useful.
Steaming: Helps preserve many nutrients because vegetables are not immersed in water.
Microwaving: Can retain nutrients well when cooking time and added water are limited.
Quick sautéing: Uses a short cooking time and can be a practical option with a small amount of unsaturated oil.
Boiling: Is not unhealthy, but prolonged boiling can cause water-soluble nutrients to move into the cooking water.
If you use that water in soups or stews, some of those nutrients remain in the meal.
Should You Eat Some Vegetables Cooked for Safety?
Yes.
Certain foods, including kidney beans, must be cooked properly to remove naturally occurring harmful substances.
Cooking can also make some vegetables easier to digest.
People with specific digestive conditions may tolerate cooked vegetables better than large amounts of raw vegetables.
What Is the Best Everyday Approach?
Include both raw and cooked vegetables throughout the week.
A salad at lunch and steamed or roasted vegetables at dinner can provide variety without complicated rules.
Choose cooking methods you enjoy and can maintain regularly.
The most important habit is eating enough vegetables, not trying to find one perfect preparation method.
Based on Research
World Health Organization. Healthy diet. January 2026. https://www.who.int/news-room/fact-sheets/detail/healthy-diet
