Too embarrassed to ask your doctor about sex, body quirks, or the latest celeb health fad? In a regular feature and a new book, "What the Yuck?!," Health magazine medical editor Dr. Roshini Raj tackles your most personal and provocative questions. Send 'em to Dr. Raj at whattheyuck@health.com.

Q: I sometimes smoke pot on the weekend. Can this affect my work during the upcoming week?

A: It sure can. Although the immediate effects of marijuana typically last only one to three hours, frequent users can have a hard time concentrating and processing information, even days later.

Marijuana has other risks, too: It contains more carcinogens than tobacco and can cause the same respiratory issues - possibly even cancer.

Bottom line: Your weekend habit could have consequences way worse than just making you feel spaced out at work.

Copyright Health Magazine 2011