Milk can help relieve constipation.

http://www.constipation-remedies.co.uk/constipation-home-remedies.php

Not Too Old for Milk

You think you are too old for milk? Wrong.

Milk can help relieve constipation, aside from giving you the calcium you need as your bones start to deteriorate due to aging.

Before pulling on the covers for a good night's sleep, try doing what toddlers are used to do: drink your own share of milk. One warm glass will work quite well. This will help ease up your problem with defecation.

If you happen to experience chronic constipation, try to add in two spoonfuls of castor oil into your warm glass of milk. Careful though. Be sure the next day you are staying at home! :-) You might be repeatedly running to the comfort room to unload all those gooey stuff.