Size and shape of breasts are also genetically determined – by heredity.
However, various factors during one’s life leaves a trace on the definitive appearance of breasts – enlargement or variations in weight, pregnancy, breastfeeding, posture, physical activity, different medications (hormones, corticosteroids, antihypertonics, etc.).
Dissatisfaction with one’s appearance, complexes or deformities in statics is nowadays truly unnecessary. Corrective procedures done on breasts are a part of modern esthetic surgery.