Check out this website for more information on Magnesium
http://www.coldcure.com/html/dep.html#dep
The article also states; "a low carb diet can lower the risk of depression"..."many low carb foods listed"
this site will lead you to more information on magnesium and depression...
Food Milligrams %DV
Kelp 100 grams (Warning! very high in glutamate) 760 190
Alfalfa 100 grams 230 58
Avocado, Florida, 1/2 med 103 26
Wheat germ, toasted, 1 oz 90 22
Almonds, dry roasted, 1 oz 86 21
Cereal, shredded wheat, 2 rectangular biscuits 80 20
Seeds, pumpkin, 1/2 oz 75 19
Cashews, dry roasted, 1 oz 73 18
Nuts, mixed, dry roasted, 1 oz 66 17
Spinach, cooked, 1/2 c 65 16
Bran flakes, 1/2 c 60 15
Cereal, oats, instant/fortified, cooked w/ water, 1 c 56 14
Potato, baked w/ skin, 1 med 55 14
Soybeans, cooked, 1/2 c 54 14
Peanuts, dry roasted, 1 oz 50 13
Peanut butter, 2 Tbs. 50 13
Chocolate bar, 1.45 oz 45 11
Bran (pure), 2 Tbs 44 11
Vegetarian baked beans, 1/2 c 40 10
Potato, baked w/out skin, 1 med 40 10
Avocado, California, 1/2 med 35 9
Lentils, cooked, 1/2 c 35 9
Banana, raw, 1 medium 34 9
Shrimp, mixed species, raw, 3 oz (12 large) 29 7
Tahini (from sesame seed), 2 Tbs 28 7
Raisins, golden seedless, 1/2 c packed 28 7
Cocoa powder, unsweetened, 1 Tbs 27 7
Bread, whole wheat, 1 slice 24 6
Spinach, raw, 1 c 24 6
Kiwi fruit, raw, 1 med 23 6
Hummus, 2 Tbs 20 5
Broccoli, chopped, boiled, 1/2 c 19 5
*DV = Daily Value. DVs are reference numbers based on the Recommended Dietary Allowance (RDA). They were developed to help consumers determine if a food contains very much of a specific nutrient. The DV for magnesium is 400 milligrams (mg). The percent DV (%DV) listed on the nutrition facts panel of food labels tells adults what percentage of the DV is provided by one serving. Even foods that provide lower percentages of the DV