4. Eggs
The yolk of an egg is an excellent source of choline, a precursor to acetylcholine, the neurotransmitter that helps to improve your focus and attention by regulating cognitive function.[12] Low levels of choline have been associated with Alzheimer’s and other neurodegenerative diseases. Choline is a precursor to citicoline as well, another nutrient important for your brain’s health. Citicoline helps to increase blood flow to your brain and enhances your brain’s ability to utilize blood glucose, its main source of fuel. Research has shown that citicoline supplementation can help to improve focus and mental energy.[13] Eggs can also be a good source of omega-3 fatty acids.
What to do: Free-range eggs have twice the omega-3s in comparison to eggs that are conventionally farmed.