Protein requirement varies at different stages in your life. Young and adolescent children, pregnant and nursing women, aging and/or stressed individuals actually need more than this stipulated 1 gram per kilo of body weight. Regular exercise, frequent travel, etc also increases the protein requirement of the body. The body wastes about 40% protein in just few days of experiencing mental stress, surgery, prolonged sickness and starvation. During these times not just protein but even the total calories consumed need to go up.
