Page 50 - FoodFocusThailand No.246 October 2026

STRA
STRATEGIC R & DTEGIC R & D

GUT MATTERS:

THE GUT MICROBIOME AND NEW CHALLENGES

IN HEALTHY FOOD DEVELOPMENT

Medical and health sciences are increasingly emphasizing the gut microbiome. Beyond its fundamental role
in digestion, the gut microbiome plays a vital part in bidirectional communication between the gut and the
brain via thegut-brain axis. Gut microorganisms actively synthesize neurotransmitters and metabolites that
regulate brain function, mood, and stress responses (Cryan et al., 2019). This intricate link has elevated
“Gut Matters” into a cornerstone of preventive healthcare and presented a transformative opportunity for
the food industry (Figure 1).

Gut-Brain Axis: From UPF Crisis to dopamine. Lowered levels or dysfunctional activity of these
Next-Generation Food Innovation Challenge neurochemicals significantly heighten the risk of anxiety and
In modern society, fast-paced lifestyles make stress an depression (Layunta et al., 2021).
unavoidable issue, driving dietary shifts toward increased Chronic stress can initiate poor dietary choices, such as
reliance on ultra-processed foods (UPFs). While UPFs meet increased UPF consumption, which alters gut microbiota
consumer demands for convenience and shelf stability, the composition and worsens systemic inflammation. This self-
composition of most UPFs typically contains high amounts perpetuating feedback loop undermines both physical and
of sugar, as well as artificial flavorings and food additives, psychological health (Bonaz et al., 2018; Han et al., 2022;
particularly emulsifiers. Although legally approved for safety, Song et al., 2023). Consequently, consumers are prioritizing
animal studies indicate that certain emulsifiers may disrupt preventive health solutions and functional foods, boosting
gut microbial balance by specifically damaging the intestinal demand for probiotic-fortified products.
mucus layer. This may lead to leaky gut syndrome and trigger For food industry researchers and strategists, the
chronic, low-grade inflammation without the consumer’s challenge extends beyond simply adding trendy probiotic
awareness (Daniel et al., 2023). These impacts do not stop strains or isolated nutrients to product labels. Developing
at the digestive system, but also affect the “gut-brain axis”, truly effective functional foods requires a mechanistic
which is a wo-way communication system between the gut understanding of gut protection, spanning the gut barrier,
and the brain through multiple mechanisms, including the short-chain fatty acids (SCFAs), and specialized innovations
nervous system (specifically the vagus nerve), the immune like psychobiotics that support sustainable emotional and
system, the hormonal system, and metabolites produced by neurological health (Sarkar et al., 2016). This approach
gut microorganisms (Bonaz et al., 2018; Han et al., 2022) enables the creation of functional products that genuinely
(Figure 2): preserve microbiome balance, rather than falling into the
1. HPA Axis: Inflammatory signals from the gut activate trap of ultra-processed foods disguised as health products.
the hypothalamic-pituitary-adrenal (HPA) axis, a primary
neuroendocrine stress-response system. This stimulation Gut Innovation:
increases cortisol secretion, which can cause dysregulated The Future of Food Begins in the Gut
stress responses, increased anxiety, and unexpected To evolve, the food industry must move beyond traditional
palpitations (Berding et al., 2023). probiotic formulations toward targeted, bioactive ingredients.
2. Disruption of Neurotransmitter Pathways: Systemic Postbiotics, psychobiotics, and synbiotics represent the
inflammatory signals that reach the brain can interfere with foundation of modern gut-health innovation (Figure 3).
the synthesis of key neurotransmitters, such as serotonin and

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