Serin

Serine — an amino acid involved in the synthesis of proteins, phospholipids, and neurotransmitters. It affects the functioning of the nervous system, energy metabolism, and detoxification processes.

Although the body can synthesize serine on its own, its intake from food is important for maintaining optimal levels, especially during stress, physical exertion, and restrictive diets.

Beneficial properties

Serine performs several important functions in the body:

• participates in the synthesis of proteins and biologically active substances;
• supports the health of the nervous system by participating in the production of phospholipids and neurotransmitters;
• affects cognitive functions and psycho-emotional state;
• regulates glucose and lipid metabolism;
• is involved in detoxification, helping to neutralize toxins.

Daily requirement and sources

The exact daily norm of serine is not established, as it is considered a conditionally essential amino acid. On average, the body requires 1–3 g of serine per day. Main sources:

• meat: chicken, beef, turkey;
• fish: tuna, salmon;
• dairy products: cheese, yogurt, milk;
• eggs;
• plant sources: legumes, nuts, seeds, oats, quinoa.

Symptoms and consequences of deficiency

A lack of serine can lead to disruptions in various systems of the body:

• deterioration of cognitive functions and nerve impulse transmission;
• weakened immune defense due to reduced antibody production;
• decrease in muscle mass and physical endurance;
• hypoglycemia and metabolic disorders.

The risks of deficiency increase during stress, chronic diseases, and low-protein diets.

Possible risks of excess and their manifestations

Excess serine can cause:

• amino acid imbalance, including reduced levels of glycine and alanine;
• disruptions in protein synthesis and metabolism;
• possible neurological symptoms: anxiety, depressive states.

Excessive consumption of serine is mainly associated with the intake of supplements without medical indications.