THAILAND

From Fresh Markets to Processed Food Expansion

A Traditional Food System

Thailand’s traditional diet developed around fresh, locally sourced foods and a strong culinary structure.

Core components included:

• rice
• vegetables and herbs
• fish and seafood
• fermented sauces
• fresh fruits

Meals were typically prepared daily using market ingredients, combining carbohydrates, protein, and vegetables in a single sitting.

This pattern supported metabolic stability.

Then vs Now

Traditional Pattern

Rice-based meals
Vegetables and herbs
Fresh fish and seafood
Fermented foods and sauces
Structured meals
Low added sugar intake

Modern Pattern

Refined carbohydrates
Sugary beverages
Processed snacks
Packaged and convenience foods
Increased eating frequency

The transition has been gradual but consistent.

Street food and dietary change

Thailand’s food culture is strongly tied to fresh preparation, especially in street markets.

Historically, street food:

• used fresh ingredients
• was prepared on demand
• maintained balance between components

However, modern changes include:

• increased use of refined sugars
• more sweetened beverages
• greater reliance on processed ingredients in some settings

The structure remains, but composition is shifting.

Sugary beverages and sweet drinks

Sugary beverages are a major driver of dietary change.

Common exposures include:

• sweetened iced teas
• Thai tea with condensed milk
• sweetened coffee drinks
• bottled and packaged beverages
• sweetened fruit drinks

These drinks are:

• widely available
• inexpensive
• consumed throughout the day
• often high in added sugar

Condensed milk–based drinks are particularly important, as they combine:

• sugar
• fat
• liquid form

This creates a highly energy-dense, rapidly absorbed exposure.

Liquid sugar and metabolic load

These beverages introduce:

• frequent sugar intake
• rapid absorption
• minimal satiety

They are often consumed:

• between meals
• alongside meals
• multiple times per day

This shifts intake from structured eating to continuous exposure.

Urban dietary shift

Urban populations show:

• increased reliance on convenience foods
• reduced home cooking
• more frequent snacking
• higher intake of sweetened drinks

Traditional food culture remains visible, but daily behavior is changing.

Disease pattern

Thailand is experiencing:

• rising Type 2 diabetes
• increasing obesity
• metabolic syndrome
• fatty liver disease

These changes are occurring across both urban and semi-urban populations.

The metabolic transition

The modern diet introduces:

• refined carbohydrates
• liquid sugar
• frequent intake

This leads to:

• insulin resistance
• increased liver fat
• dyslipidemia

Why Thailand matters

Thailand represents a mid-stage transition:

• strong traditional food culture still present
• gradual but steady increase in sugar exposure
• visible shift toward modern dietary patterns

It shows how metabolic disease can develop even when traditional food systems persist.

Intervention opportunity

Thailand retains:

• strong fresh food markets
• cultural emphasis on meal structure
• widespread access to whole foods

Reducing sugar exposure—especially from beverages—while maintaining traditional meal patterns offers a practical path forward.

Explore Full Atlas of the Global Metabolic Crisis