Brushing teeth and changing underwear every day??????

my grandfather was in WWII and he didn't change his underwear and brush his teeth everyday and he lived to 96. I think its all a big scam to make money by companies like Tide and Colgate. It's a big conspiracy if you ask me.Brushing teeth and changing underwear every day??????Yeah, but did he have horrible breath and a stinky ***?Brushing teeth and changing underwear every day??????changing your underwear and brushing your teeth every day doesn't affect the length of your life, it affects the quality of your life. Not changing your underwear every day can give you genital infections. Not brushing your teeth can cause terrible bad breath and cavities. Feel free to not brush your teeth or change your underwear if you think it's a conspiracy; more power to you. But if you expect anyone of the opposite gender to kiss/have sex with you...I'd clean up.