J.W.
It tyically means you are not getting enough Essential Fatty Acids in your diet (EFAs). These are the good fats our bodies need, so your body is talking to you essentially. Up your good fats like eating nuts, seeds, hummus, avocados, nut butters like almond butter, EVOO, coconut oil, flaxseed oil, grounded flaxseeds and take a good quality fish oil like Nordic Naturals Ultimate Omega + Vitamin D3 at www.vitacost.com or Carlson's is another good brand. Not all fish oils are created equal...inflammation is the key word here, when our bodies are inflammed we need to reduce with the good fats in our diets. It is vitally important for kids to get good fats, it helps nourish their brains and 75% of brain development occurs during the first two years of life, I mention this b/c you have two small kids. Hummus is a great toddler snack and snack for mom. My 18m old and I eat it with veggies almost every day when she wakes up from her nap. :)
Good Luck,
J. W. MPH
Wellness Educator