How Micronutrient Status Influences the Stability of Nutrition Habits

By Dr Pascale Ricci, Head of Precision Nutrition at REVIV Global

Micronutrient deficiencies are indicators of suboptimal dietary patterns and may influence health and development, but they do not themselves determine whether nutritional habits become stable routines. Addressing deficiencies can improve nutritional status, but the establishment of stable, healthy dietary routines requires broader, sustained changes in food systems, education, and social determinants of health.

Increased cortisol demand, via circadian or stress related surges, modulates the balance between fat, carbohydrate, and protein metabolism, accelerating nutrient turnover by promoting catabolic processes. These effects are mediated by cortisol’s action on glucocorticoid receptors.

Elevated cortisol stimulates protein breakdown, leading to increased amino acid release (notably alanine and leucine), which are then used for hepatic gluconeogenesis and alters substrate utilization. 

Cortisol also enhances glucose production and turnover, causing hyperglycemia even in the presence of hyperinsulinemia, and shifts metabolism toward carbohydrate utilization. 

Lipolysis is also promoted, increasing free fatty acid availability for energy.

The net result is increased nutrient turnover, characterized by rapid mobilization and utilization of protein, carbohydrate, and fat stores to meet metabolic demands during periods of sustained stress or illness. 

Adequate intake of B vitamins, magnesium, iron, and zinc is necessary for optimal energy production, neurotransmitter synthesis, and prevention of fatigue.

B vitamins, magnesium, iron, and zinc are essential micronutrients with distinct but overlapping roles in energy production, neurotransmitter synthesis, and the prevention of fatigue.

B vitamins act as coenzymes in cellular energy (ATP) metabolism. Folate (B9) and cobalamin (B12) are critical for methylation reactions and red blood cell synthesis, impacting CNS function and preventing anaemia-related fatigue. B vitamins also support neurotransmitter synthesis, including serotonin, dopamine, and GABA, with deficiencies linked to neuropsychiatric symptoms, including apathy and low motivation and fatigue. 

Magnesium is a cofactor for over 600 enzymatic reactions, including those involved in ATP synthesis and utilization. Magnesium deficiency impairs energy metabolism, increases neuromuscular excitability, and contributes to fatigue and mood disturbances.

Iron is essential for oxygen, mitochondrial electron transport and neurotransmitter synthesis. Iron deficiency, even without anaemia, can cause fatigue, cognitive impairment, and mood disturbances by limiting cellular energy production and neurotransmitter function, particularly in children and adolescents, and is also associated with increased cravings for non-food substances, for example ice!  

Zinc is required for numerous enzymes involved in energy metabolism, DNA synthesis, and neurotransmitter regulation. Zinc deficiency impairs cognitive function, neurotransmission, which may manifest as low motivation and can contribute to fatigue. 

Vitamin D deficiency is common and associated with neurobehavioral symptoms, including low mood and motivation. 

Mild vitamin C deficiency is associated with symptoms such as apathy, fatigue, and low mood, which can contribute to low motivation. 

Cravings for specific foods may also be driven by deficiencies in these micronutrients, as the body attempts to compensate for inadequate intake, but are not a reliable diagnostic tool. Sugar cravings are more commonly linked to blood sugar instability, poor sleep, magnesium deficiency, hormone imbalance and stress. 

Nutrigenomic variability impacts nutrient absorption by modulating the efficiency and capacity of intestinal uptake, metabolism, and transport of nutrients through genetic differences, primarily single nucleotide polymorphisms (SNPs), in genes involved in these pathways. For example, SNPs in genes encoding transporters, enzymes, and binding proteins can alter the bioavailability of fat-soluble vitamin D and vitamins B9 and B12, leading to significant inter-individual differences in absorption and circulating levels despite similar dietary intake. 

The phenotypic effect of individual SNPs is often modest, but the cumulative effect of multiple variants can explain a substantial proportion of variability in nutrient absorption. 

Gene-diet interactions are further influenced by environmental factors, gut microbiota, and epigenetic modifications, which together shape the individual response to dietary intake and absorption.

This underscores the importance of personalized nutrition strategies, particularly for identifying individuals at risk of deficiency despite adequate intake, and highlight the need for further research to validate genetic markers and integrate them into clinical practice.

Stable habits require mental clarity, emotional regulation, physical energy and stress resilience. Micronutrient deficiencies can quietly erode all four.

Good nutrition which translates to optimised micronutrient levels, enables better energy and mood, which results in easier consistency and reinforced habit. Micronutrients influence the biological foundation, but behaviour design determines the structure.

Sometimes people adopt restrictive diets that accidentally reduce key nutrients. At first, motivation carries you, but later fatigue, cravings, mood shifts all rear their heads which may be interpreted as a lack of willpower, but actually may be due to physiology. Worsening nutritional deficiencies may enable even the best considered ‘good’ habits to collapse, when the cost feels higher than the reward, whereas a stable routine and nutritional habits, that support micronutrient sufficiency, is more likely to feel sustainable.

IV nutrition can serve as a rapid, targeted supplementation tool to optimize micronutrient levels particularly during periods of high stress, frequent travel, or increased seasonal demands when dietary intake and absorption may be compromised.