Nutrient-dense weaning is the practice of introducing solid foods that are rich in essential nutrients to infants during the weaning process. Early life nutrition advocates for nutrient-dense foods to be the first introduction to solid foods, ensuring a strong nutritional foundation.

1.DHA：Visual system optimization is the process of maximizing the function of the visual system for clear and accurate sight. DHA is a critical component of the retina and is necessary for the proper development and function of photoreceptor cells. Adequate DHA levels can help optimize visual acuity and prevent vision-related disorders.

2.EPA：EPA is instrumental in lipid profile optimization, which involves maintaining healthy levels of cholesterol and triglycerides in the blood. By reducing LDL cholesterol and increasing HDL cholesterol, EPA supports a lipid profile that is associated with a lower risk of heart disease.

3.ARA：Plasma concentration of ARA, which can reach up to 400mg/L in regular individuals, indicates its systemic importance. The presence of ARA in the plasma suggests its involvement in lipid transport and its potential impact on cardiovascular health.

4.HMOs：HMOs have the capacity to modulate the inflammatory response in infants. By influencing the production of inflammatory mediators, HMOs can help maintain a balanced immune response and reduce unnecessary inflammation.

5.β-carotene：In the food industry, β-carotene is used as a natural coloring agent to enhance the appearance of various food products. Its natural origin and health benefits make it a preferred choice over synthetic colorants.

6.N-acetylneuraminic Acid：In the cosmetics industry, N-acetylneuraminic Acid is used as an ingredient for its skin-whitening properties. It is valued for its ability to modulate melanin production, making it a popular component in skin-lightening products.