Half of participants (healthy M and F, no children), randomly assigned. Group assignment will balance sex distribution. Nutrigenetic testing will be performed prior to intervention. Participants will work with a registered dietician, who will assess their current nutrient intakes and corresponding nutrient plasma values (T0). Target nutrient intakes will be determined based on nutrigenetic assessment. Participants undergo a nutrition intervention (first 3 months, Intervention 1), in which the difference between actual intakes and nutrigenetically-recommended intakes will be provided using supplements. At the end of Intervention 1 (T1), nutrient plasma values will be measured. After a wash-out period (3 months, no supplementation), nutrient plasma levels will be measured (T2), and a second intervention (3 months, Intervention 2) will consist of supplements administered according to EFSA recommended levels. At the end of Intervention 2, plasma nutrient levels will be measured (T3).

Half of participants (healthy M and F, no children), randomly assigned. Group assignment will balance sex distribution. Nutrigenetic testing will be performed prior to intervention. Participants will work with a registered dietician, who will assess their current nutrient intakes and corresponding nutrient plasma values (T0). Target nutrient intakes will be determined based on nutrigenetic assessment. Participants undergo a nutrition intervention (first 3 months, Intervention 1), in which the difference between actual intakes and EFSA-recommended intakes will be provided using supplements. At the end of Intervention 1 (T1), nutrient plasma values are measured. After a wash-out period (3 months, no supplementation), nutrient plasma levels will be measured (T2), and a second intervention (3 months, Intervention 2) will consist of supplements administered according to targets recommended by nutrigenetic testing. At the end of Intervention 2, plasma nutrient levels will be measured (T3).

Each grup will receive two interventions ("Nutrigenetic" and "Standard"), in a cross-over design (3 months each), spaced by a wash-out period (3 months).

nutrients as follows:

• ALA
• LA
• A
• D
• E
• K
• Riboflavina
• Niacina
• Folati
• B12
• Calciu
• Magneziu
• Seleniu
• Zinc

Each nutrient (having different system of measure) will be considered as a separate outcome.