Three techniques that have been developed to prevent pregnancy are :
(i) Mechanical Methods : Include condoms, diaphragm, IUCDs, etc.
(ii) Chemical Methods : Include oral contraceptive pills, spermicide.
(iii) Surgical Method : Includes vasectomy and tubectomy.
The chemical methods are not meant for males.
The use of such contraceptive methods have various benefits, such as :
(i) Large size of families have a negative impact on the economic status of the family.
(ii) Having pregnancies at quick successions reduces mother's health and vitality. Use of contraceptive devices thus, effects the maternal health status.
(iii) Some contraceptive devices (such as condoms) are also helpful in preventing sexually transmitted diseases.