Inadequate energy intake results in poor growth (puppies and kittens), lethargy, weakness, compromised immune function, and poor performance (whether reproductive or athletic). Complete starvation results in loss of adipose tissue as well as loss of lean body mass and atrophy of internal organs. | Inadequate energy intake results in poor growth (puppies and kittens), lethargy, weakness, compromised immune function, and poor performance (whether reproductive or athletic). Complete starvation results in loss of adipose tissue as well as loss of lean body mass and atrophy of internal organs. |