Synthetic milk compositions for optimal growth and development and prevention of obesity in male and female infant and children

A method for promoting balanced growth in a male infant or young boy and reducing a risk of obesity in the male infant or young boy now and later in life, the method comprising:

• providing a set of distinct synthetic nutritional compositions comprising a first synthetic composition and a second synthetic composition;
• and
• administering to the male infant or young boy the first synthetic composition, wherein the first synthetic composition is a foodstuff comprising
• 60-85 kcal/100 ml energy;
• 3.9-6 g/100 ml lipid;
• 600-810 mg/100 ml linoleic acid;
• 710-930 mg/100 ml polyunsaturated acids;
• and
• 21-30 mg/100 ml phospholipids, the phospholipids comprising phosphatidylcholine that is 4.7-6.8 mg/100 ml of the first synthetic composition, phosphatidylethanolamine that is 6.3-10 mg/100 ml of the first synthetic composition, and phosphatidylinositol that is 1-2 mg/100 ml of the first synthetic composition,
• wherein the first synthetic composition has a quantity of at least one component that differs by at least 10% relative to the second synthetic composition, the at least one component selected from the group consisting of the linoleic acid, the polyunsaturated acids, the phospholipids, the phosphatidylcholine, the phosphatidylethanolamine, and the phosphatidylinositol.