GENDER SPECIFIC SYNTHETIC NUTRITIONAL COMPOSITIONS AND NUTRITIONAL SYSTEMS COMPRISING THEM

1 . A method for providing nutrition comprising administering a gender specific synthetic nutritional composition for an infant up to 1 month of age wherein, the concentration of an amino acid selected from the group consisting of alanine, histidine, isoleucine, proline, and valine is adapted based on that found in human milk produced for an infant of the same gender and age.

2 . Method according to claim 1 wherein, if the concentration of alanine is adapted to a male infant it is 32.7 to 193.1 mg per 100 g and, if the concentration of alanine is adapted to a female infant it is 32.7 to 111.9 mg per 100 g; if the concentration of histidine is adapted to a male infant it is 29.4 to 110.3 mg per 100 g and, if the concentration of histidine is adapted to a female infant it is 28.2 to 80.8 mg per 100 g; if the concentration of isoleucine is adapted to a male infant it is 51.1 to 155.5 mg per 100 g and, if the concentration of isoleucine is adapted to a female infant it is 50.5 to 103.3 mg per 100 g; if the concentration of proline is adapted to a male infant it is 87.5 to 290.8 mg per 100 g and, if the concentration of proline is adapted to a female infant it is 81.1 to 182.8 mg per 100 g; and if the concentration of valine is adapted to a male infant it is 51.5 to 249.6 mg per 100 g and, if the concentration of valine is adapted to a female infant it is 56.9 to 149.9 mg per 100 g.

3 . Method according to claim 1 wherein, the gender specific synthetic nutritional composition is selected from the group consisting of: infant formula, and a composition for infants that is intended to be added to or diluted with human milk.

4 . A method of preparing a composition comprising: measuring out an appropriate amount of a gender neutral synthetic nutritional composition and mixing it with an additive and/or diluent to produce a method for providing nutrition comprising administering a gender specific synthetic nutritional composition for an infant up to 1 month of age wherein, the concentration of an amino acid selected from the group consisting of alanine, histidine, isoleucine, proline, and valine is adapted based on that found in human milk produced for an infant of the same gender and age.

5 . A nutritional system comprising a gender specific synthetic nutritional composition wherein if adapted to a male infant a concentration of alanine is 32.7 to 193.1 mg per 100 g and, if adapted to a female infant a concentration of alanine is 32.7 to 111.9 mg per 100 g; if adapted to a male infant a concentration of histidine is 29.4 to 110.3 mg per 100 g and, if adapted to a female infant a concentration of histidine is 28.2 to 80.8 mg per 100 g; if adapted to a male infant a concentration of isoleucine is 51.1 to 155.5 mg per 100 g and, if adapted to a female infant a concentration of isoleucine is 50.5 to 103.3 mg per 100 g; if adapted to a male infant a concentration of proline is 87.5 to 290.8 mg per 100 g and, if adapted to a female infant a concentration of proline is 81.1 to 182.8 mg per 100 g; if adapted to a male infant a concentration of valine is 51.5 to 249.6 mg per 100 g and, if adapted to a female infant a concentration of valine is 56.9 to 149.9 mg per 100 g.

6 . A nutritional system according to claim 5 comprising one gender specific synthetic nutritional composition for a male infant of up to 1 month of age and, one gender specific nutritional composition for a female infant of up to 1 month wherein, the concentration of the amino acid in the synthetic nutritional composition for a male infant is higher than in that for the female infant.

7 . A nutritional system according to claim 5 further comprising a gender specific synthetic nutritional composition for an infant of more than 1 month of age wherein, the concentration of the amino acid in the gender specific synthetic nutritional compositions does not differ by gender for infants of the same age.

8 . A nutritional system according to claim 5 further comprising a gender neutral synthetic nutritional composition for infants of more than 1 month of age.

9 . A method for providing an optimum amount of amino acids to an infant, comprising administering a gender specific synthetic nutritional composition for an infant up to 1 month of age wherein, the concentration of an amino acid selected from the group consisting of alanine, histidine, isoleucine, proline, and valine is adapted based on that found in human milk produced for an infant of the same gender and age.

10 . A method for use to treat, protect or mitigate sub optimal growth and development of an infant comprising administering a gender specific synthetic nutritional composition for an infant up to 1 month of age wherein, the concentration of an amino acid selected from the group consisting of alanine, histidine, isoleucine, proline, and valine is adapted based on that found in human milk produced for an infant of the same gender and age.

11 . A method of claim 9 comprising:

preparing a gender specific nutritional compositions from a gender neutral synthetic nutritional composition;

feeding a gender specific nutritional compositions to an infant of up to 1 month of age.

12 . (canceled)

13 . A kit for providing an optimized amount of alanine, and/or histidine, and/or isoleucine, and/or proline, and/or valine to an infant, for an infant of up to 1 month of age, the kit comprising:

a gender neutral synthetic nutritional composition

a label indicating dosage requirements for an infant so as to arrive at a gender specific nutritional composition wherein for an infant up to 1 month of age wherein, the concentration of an amino acid selected from the group consisting of alanine, histidine, isoleucine, proline, and valine is adapted based on that found in human milk produced for an infant of the same gender and age.