Some researchers believe that the depletion of omega-3's in modern diets is largely to blame for increases in depressive disorders. Nutrients like folic acid are essential to normal nervous system development. Many researchers have questioned that belief. Nutrition During Pregnancy and Prior to Conception You may realize that good nutrition during pregnancy is essential, but you may be unaware of how important it is to be well-nourished when you are trying to conceive. Dietary preferences are partly to blame, but large-scale farming practices can be blamed, as well. The baby's brain and central nervous system begin to develop in the firsts few weeks following conception. Chronically low nutrient intake is a problem in Western societies.

Some food manufacturers have started fortifying foods with omega-3 fatty acids, in order to address that com deficit. It has been known for some time that omega-3's are essential for normal brain development and function.

But, it was believed that most women get enough through diet, alone. A growing amount of research indicates that omega-3 fatty acids are essential, too. A study conducted in 2003 sho that one out of every eight women took some kind of antidepressant at some point while they were pregnant.

Pregnancy nutrition factors may be partly to blame for post-partum depression, too.