"The side effects of DDT in men are that men easily get tired, there is reduction in libido and sperm production," Andrew Daudi, principal secretary in the ministry of agriculture, was quoted as saying by the Weekend Times.
The insecticide is banned in Malawi as in most other countries but members of parliament's Committee on Health and Population have called for its return despite its dangers to the environment.
They say it is more effective than other chemicals used to kill -carrying mosquitoes responsible for the deaths of thousands of people here every year.
Rabson Chirwa, an MP also quoted in the report, disagreed with Daudi.
"Should we be dying of malaria because men want to produce more sperm and because men want to have libido? These reasons do not hold ," Chirwa said.
Neither referred to the detrimental effect on wildlife, the environment and human , which led to it being banned by the United States in the 1970s and most other nations subsequently.
Malawi's campaign to fight malaria by providing free or cheap mosquito nets has failed to curb the number of deaths caused by the , the government said in March, prompting some MPs to argue that the use of DDT is merited.