Editing Reduction (section)

=== Medicine ===
==== Medical procedures ====
* [[Lung volume reduction surgery]], a treatment for chronic obstructive pulmonary disease
* [[Selective reduction]] (or fetal reduction), the practice of reducing the number of fetuses in a multifetal pregnancy
* [[Reduction (orthopedic surgery)]], a medical procedure to restore a fracture or dislocation to the correct alignment
* [[Ventricular reduction]], a type of operation in cardiac surgery
* Cosmetic surgery:
** [[Breast reduction]]
** [[Jaw reduction]]

==== Other uses in medicine ====
* [[Weight loss]]
* In epidemiology:
** [[Relative risk reduction]], the absolute risk reduction by the control event rate
** [[Absolute risk reduction]], the decrease in risk of a given activity or treatment in relation to a control activity or treatment
* [[Urea reduction ratio]] (URR),  a dimensionless number used to quantify hemodialysis treatment adequacy