Does cooking destroy biophotons in food?
You will often see a very simple claim online: raw food is full of biophotons, while cooking destroys them.
The reality is more interesting. Heating profoundly changes living plant tissue and therefore changes its ultra-weak photon emission — but biophotons are not a tank of “life energy” that can simply be measured as full before cooking and empty afterwards.
To understand why, we first need to understand what scientists are actually measuring.
What Are Biophotons?
Living biological material produces extremely faint emissions of photons. Researchers generally call this phenomenon ultra-weak photon emission (UPE), although the term biophotons is widely used.
These emissions are associated with biochemical processes taking place within living tissues, particularly reactions involving metabolism and oxidation.
Plants, seeds, fruits, vegetables, animals and even the human body produce measurable ultra-weak light.
For a broader explanation, read our main guide: Biophotons: The Hidden Light Emitted by Your Body & Food.
What Happens to Plant Cells When Food Is Cooked?
A raw fruit or vegetable is living or recently living biological tissue. Even after harvesting, many cellular and chemical processes continue.
Heating changes that tissue substantially. Depending on the temperature and duration, cell membranes are disrupted, proteins change structure, enzymes lose activity, water moves out of cells and the organised metabolism of living plant tissue eventually stops.
It follows that cooked plant tissue is biologically different from the same tissue in its fresh raw state.
So Does Heat Reduce Biophotons?
Heat changes the conditions that produce ultra-weak photon emission, so the emission pattern of food can change substantially when it is heated.
But there is an important complication.
Ultra-weak photons are not emitted only because tissue is alive. Oxidative chemical reactions can also generate excited molecules that release photons. Cutting, bruising, heating and other forms of stress can therefore alter photon emission in ways that are not equivalent to simply “losing light”.
That is why a statement such as “cooking destroys all biophotons” is scientifically too crude.
Is Raw Food More “Alive” Than Cooked Food?
In a literal biological sense, fresh raw plant tissue can still contain functioning cells and ongoing metabolic processes. Once sufficiently heated, those organised living processes stop.
That distinction is real without needing to claim that cooked food becomes completely devoid of value.
Raw fruits and vegetables retain their original food structure and naturally contain water, fibre, carbohydrates, vitamins, minerals and a huge range of plant compounds. Some compounds are sensitive to heat, while others can become more accessible after cooking.
You can explore this broader subject in The Best Benefits of Raw Foods.
Does Cooking Remove the “Light Energy” Stored by Plants?
This idea needs separating into two different concepts.
Plants capture sunlight through photosynthesis and convert that energy into chemical energy stored in molecules such as carbohydrates. When we eat plant food, our metabolism can release and use some of that stored chemical energy.
That is different from saying that visible sunlight is stored inside fruit as a reservoir of photons which then travel directly into human cells when we eat it.
Biophoton research measures ultra-weak photon emissions associated with biological and chemical activity. It does not establish that food contains a nutritional allowance of stored photons comparable to calories or vitamin C.
What About Steaming, Boiling and Gentle Cooking?
Different cooking methods expose food to different temperatures, amounts of water and lengths of time, so they alter food in different ways.
It would therefore be misleading to claim that every cooking method has an identical effect on ultra-weak photon emission.
More importantly, there is no established nutritional scale that allows us to say, for example, that lightly steamed vegetables retain a particular percentage of their “biophotons”.
If you see precise percentages quoted without a specific experiment, food, measurement method and conditions, treat them cautiously.
Does Freezing Affect Biophotons?
Freezing also changes biological tissue. Ice formation, temperature and thawing can affect cell membranes and biochemical processes.
Again, however, this is not equivalent to saying that freezing simply removes a fixed quantity of beneficial light. Ultra-weak photon emission depends on the biological and chemical state of the material when it is measured.
What About Processed Food?
Processing can involve heating, refining, grinding, drying, extraction, long storage periods and combinations of these processes.
By the time a highly processed product reaches the plate, it can be structurally very different from the plant material from which it originated.
From a Natural Body Intelligence perspective, this provides a more useful distinction than chasing a photon score: how close is the food to its original whole biological form?
That idea is explored further in Inferior Foods: What They Do to the Body and Why It Matters.
Should You Eat Raw Food Just for the Biophotons?
Biophotons alone are not a strong enough reason to build an entire diet.
There is currently no established evidence showing that eating a food because it emits more photons directly raises a person’s internal biophoton level or produces a specific health outcome.
There are broader reasons to value fresh fruits and vegetables, and the fact that they remain biologically active is fascinating. But the case for fresh whole food does not need exaggerated claims about light.
If you want to explore which foods are most relevant to this subject, read What Foods Have the Most Biophotons?.
The Natural Hygiene Perspective
Natural Hygiene looks beyond isolated nutrients and asks whether our overall way of living creates favourable conditions for normal biological function.
Fresh whole plant foods fit naturally within that perspective because they provide nourishment and water in a relatively unaltered food structure.
Biophoton research adds another fascinating layer to the discussion, but it should not replace the bigger picture of food, rest, sleep, movement, daylight and the demands we place upon the body.
That wider relationship between demands and available resources is explored in the Law of Vital Economy.
Frequently Asked Questions
Does cooking completely destroy biophotons?
No. Cooking changes living tissue and its ultra-weak photon-emission characteristics, but describing biophotons as a fixed store of beneficial light that is simply destroyed by heat is misleading.
Do raw foods emit biophotons?
Yes. Fresh plant tissues produce measurable ultra-weak photon emissions associated with biological and chemical processes.
Are cooked foods dead?
Sufficient heating stops the organised metabolism of living plant cells, but “dead” should not be confused with “nutritionally worthless”. Cooked foods can still contain carbohydrates, fibre, minerals, vitamins and other compounds.
Does freezing destroy biophotons?
Freezing changes tissue and can alter ultra-weak photon emission, but there is no simple scientifically established percentage of “biophotons lost” through freezing.
The Bottom Line
Cooking changes biophoton emission because cooking changes the biological tissue producing that emission.
That is scientifically more defensible than saying heat simply destroys a store of invisible life energy.
Fresh raw plant foods remain closer to their original living state. Cooking changes that state. Biophoton science gives us an intriguing way of observing some of those changes — but we do not need to exaggerate the science to appreciate fresh food.