Aside from chocolate, which always creates happiness and even has antioxidants, there are other foods that do the same.
Bananas
Bananas have a varity of vitamins and minerals that can boost your mood. They contain vitamins B6, A, and C; fiber; tryptophan; potassium; phosphorous; iron and protein.
Walnuts
Walnuts contain omega-3s, vitamin B6, tryptophan, protein, and folate. Higher blood levels of omega-3s have been linked with better mood and lower rates of depression.
As noted in an article on care2.com a study (animal) authored by Harvard Medical School Professor William Carlezon found that omega-3s and uridine (another substance found in walnuts, which plays an important role in helping metabolize carbohydrates) worked in the same way as standard antidepressant medications.
Sunflower Seeds
Sunflower seeds are a source of folate and magnesium, two substances that play a significant role in regulating and boosting mood. And it contains tryptophan, which boosts serotonin levels.
Eggs
Eggs have protein, omega-3s and vitamins including; B12,B2, B5, and D. It turns out that one boiled egg contains more than 20% of the daily recommended amount of tryptophan.
I wonder if the daily egg I give my dog is what makes her so happy?