Is the food you are drawn to the food your body needs — or the food your constitution suits? Research on this is mixed, and Prof. Baek’s own observation matches it: many people instinctively choose what suits their constitution, and some compulsively indulge in what harms it. This article is about food cravings and constitution, and how to tell the two apart.
In Summary
- People who were constitutionally frail from childhood often eat only what suits them by instinct — they learned early that unsuitable food costs them.
- There is evidence for “nutritional wisdom”: when short of micronutrients, people tend to prefer food combinations that supply them.
- But modern eating is heavily driven by hedonic hunger — reward, comfort, stress relief — and energy-dense food high in fat, sugar and salt.
- Sweet cravings under stress reflect the brain’s reward system, not a nutrient need.
- Gut microbes may shape cravings too, and Prof. Baek suspects the gut’s interpretation of food differs by constitution.
- So cravings and needs partly overlap — and in an environment flooded with processed food, cravings are often harmful.
- A workable rule: about 80% healthy or constitution-suited food, 20% left for pleasure.
- The emotional comfort of a craved food matters too — even when it does not suit your type.
What He Has Seen
Watching people over years, Prof. Baek found both patterns. Many choose what suits their constitution without being told. Others are drawn almost addictively to what does not.
One group stood out: people born physically frail often eat only what suits them, by instinct. They felt from early childhood that unsuitable food was a burden, and adjusted without needing a chart.
1. The Body Does Send Signals
The nutritional wisdom hypothesis holds that when people are short of micronutrients — vitamins, minerals — they naturally come to prefer food combinations that would supply them. In studies, participants preferred combinations offering more micronutrients, and the same tendency appeared in real diets. That suggests an instinctive choice to fill gaps does operate, at least to a degree.
2. But Pleasure Often Wins
In modern life, hedonic motives — taste, enjoyment, stress relief — strongly shape what we eat. Reaching for crisps or sweets when already full is hedonic eating: food sought for reward or emotion, independent of physical need. The pull is strongest toward food high in fat, sugar and salt, which connects to an evolved preference for energy-dense food.
Under stress, sweet food becomes more appealing because sugar briefly dampens the stress response and stimulates the brain’s reward centre. The effect is temporary, and over time it can do harm.
3. The Gut Has a Say
The gut microbiome may influence impulsive food choice. In animal studies, mice whose gut microbes were destroyed sought out more sweet food, and the urge eased when normal microbes were restored. A similar effect in humans has been proposed, though it is less established.
Prof. Baek adds his own reading: how the gut interprets the food it receives probably differs by constitution. That is an interpretive view rather than a demonstrated one, but it fits the broader ECM picture.
So: Craving, Need, Constitution?
They can partly coincide, but care is needed. Sometimes a craving is a genuine signal to make up a shortfall. But today, hedonic, psychological and environmental factors — above all the flood of processed food — often outweigh it, and the food you crave is frequently the food that harms you. Wanting something sweet or sharp when stressed is about reward and emotion, not about what your body needs.
A Practical Approach
- Tell the body’s signal from the pleasure motive, and put a balanced meal first.
- The 80:20 rule: fill about 80% of your diet with healthy or constitution-suited food — vegetables, fruit, whole grains — and leave 20% for enjoyment.
- Don’t discount the comfort. The emotional steadiness a craved food gives is real, even when that food does not suit your type.
Prof. Baek’s closing thought: the body has an ability to sense the character of food that no instrument can measure. Trust that instinct — and adjust it with an understanding of your own constitution. That combination is about as good as a diet gets.
Related: False Hunger: Emotional Eating · When Eating Only What Suits You Backfires
