10 Ways Your Body Is Telling You You’re Running Low on Key Vitamins

“ Constipation” Possible deficiency: Fibre and magnesium Being backed up (having fewer than three bowel movements per week) has at least a dozen possible causes. One that's common: a lack of fiber in the diet. In fact, adults consume just about half of the recommended 38 grams for men and 25 grams for women daily. Magnesium also plays a role in moving stool along, says Wagner.