1. Egg yolks are full of the amino acid L-tryptophan, which is used by the brain to synthesize serotonin, a hormone that makes us happy.
2. We associate the colour yellow with warmth, sunshine, and brightly coloured toys.
3. Eggs contain Vitamin B12 that helps maintain brain function at old age, and deficiencies in B12 have been linked to depression.
4. Eggs contain protein and healthy fats that can help you feel full throughout the day.
5. Eggs are rich in unique antioxidants that protect against harmful sunlight and reduce the risk of eye diseases.