Two new columns will appear in the Lifestyle pages of beginning this week.

Dr. Peter Gott will debut tomorrow, replacing Dr. Allen Douma, who recently announced his retirement.

A parenting column by Dr. Silvia Rimm will appear in the Weekender section each Saturday. In her ?On Raising Kids? column, Dr. Rimm will answer parents? questions about the challenges related to bringing up children.

Dr. Gott, the author of ?No House Calls?, will respond to readers? medical questions and will occasionally write a health-related commentary.