In most cases, a loss of breast fullness is related to the following factors:
Fluctuating hormone levels
Decreased tissue strength in the breasts
Gravity pulling weakened tissues downward
Low estrogen levels can lead to an increase in fat tissue within the breasts, while the connective tissue loses its elasticity. These changes often cause the breasts to appear smaller and less full than they used to be. Additionally, mammary gland tissue typically shrinks during menopause. Hormone therapy may help slow or reduce these breast changes.