My son only eats unhealthy foods and seeks out sugar items whenever possible (and often when we're not around!). I know I should get the bad-to-eat items out of the house, but I have two older kids and no cooperation from my spouse. What can I do?

First, you need to get cooperation from your spouse, even if that cooperation is limited to his agreement not to interfere with your management of the children's eating habits.  Have him meet with your pediatrician and discuss the importance of keeping his junk food separate from the children (if it has to be in the house at all).

While this is a challenging environment for maintaining healthy nutrition, you must be firm and provide a healthy role model. Your commitment to this, with or without your spouse's support, will make all the difference in your children's optimum school performance and physical wellbeing.

Dr. Patti Zomber is a child psychologist based in Marina del Rey, Calif. She has written numerous articles about parenting, and she is a contributing editor on NestleFamily.com as well as the editor of the Los Angeles Psychologist journal. 

Please Note: This Expert Q&A feature is intended to impart general child development information and mealtime tips. This is not to take the place of medical consultation and you should consult your doctor for medical advice or services.