Age                                                       height growth                                       around head growth

۱-۳ years old                                       ۱ cm per month                                    ۰.۲۵ cm

۴-۶ years old                                        ۳ cm per year                                       ۱ cm per year

In the above respect, one of the most potentially useful nutrients is a bone extract prepared by boiling sheep’s cannon bone for 8-10 hours over low temperature. let it cool. Remove the fat. Add 2 teaspoons of this extract to each daily meal. The extract can be refrigerated and is usable for up to 3 days.