Chicken doesn’t cause constipation. Even chicken has low fiber content, yet, chicken is easy to be digested. Accordingly, eating chicken doesn’t increase your risk to have constipation.
Eating rice could cause constipation and could also improve the symptoms of constipation. This depends on the type of rice you eat. White rice could cause constipation while brown rice could improve symptoms of constipation.
Iron supplements are reported to increase or decrease your bowel movements. You may suffer from diarrhea or constipation following the administration of iron supplements.