3. Constipation.
“When you have less waste product to form stool, it causes slower movement of your food through GI tract,” says Beal. You may be constipated if you have three or fewer bowel movements a week, if your stool is small and hard, or if you have a difficult time passing stool.
4. Difficulty losing weight.
“Not eating enough can make it harder to lose weight,” she says. “If you’re not taking in enough to meet your daily requirements, your metabolism may slow down as your body goes into conservation mode.”