Medically reviewed by Kayla Girgen, RD
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- What you eat at breakfast affects focus and memory, not just whether you eat.
- Foods like walnuts, blueberries, eggs, mushrooms, and avocado support brain function and cognitive performance.
- These foods provide nutrients that improve memory, stabilize mood, and sustain mental energy throughout the day.
Having a solid breakfast sets you up for focus throughout the day. But not every breakfast food has a positive impact on your memory and concentration. "After an overnight fast, the brain is essentially relying on that first meal to set the tone," Wendy Bazilian, DrPh, RD, nutritionist, author, and host of the podcast 1,000 Waking Minutes, told Health. Some foods (like ultraprocessed foods or high-sugar breakfasts) are actually linked with mental decline, while others offer superior nutrition to help you stay sharp throughout the morning and beyond. Here are five foods experts say may help you improve your brain health.
1. Walnuts

A small 2025 study, for example, found that adults aged 18-30 who ate a walnut-rich breakfast showed faster reaction times and better memory performance throughout the day, compared with people who ate a nut-free breakfast.
"This is meaningful because it suggests that including walnuts at breakfast may have measurable short-term cognitive effects in healthy young adults," Bazilian said.
Bazilian suggests incorporating the nuts at breakfast by adding a handful to oatmeal, yogurt, or a savory grain bowl.
2. Blueberries

"Blueberries may be a smart morning memory morsel for all ages," Maggie Moon, MS, RD, author of The MIND Diet: 2nd Edition, told Health.
Multiple studies have linked blueberries with cognitive improvement. A 2024 systematic review of 13 studies found that children’s same-day memory recall improved for up to six hours after eating blueberries.
In another systematic review, older adults with mild cognitive impairment and subjective cognitive decline who regularly ate blueberries experienced significant improvement in episodic memory.
3. Eggs

Americans’ favorite breakfast protein is a rich source of an important nutrient for the brain: choline. "Choline […] plays a direct role in brain function, including the production of acetylcholine, a neurotransmitter involved in memory and learning," said Bazilian.
In a 2023 randomized controlled trial, adults who consumed about 300 milligrams per day of egg-derived choline for 12 weeks had improvements in verbal memory. A 2025 systematic review also concluded that eating about an egg a day might improve memory, verbal fluency, and processing speed.
"Several studies have shown that nutrients found in eggs may benefit neurodevelopment starting from our very first days through early adulthood, including DHA, choline, lutein, as well as protein and a range of vitamins and minerals," Moon said.
4. Mushrooms

"A great reason to start the day with mushrooms is that they’ve been shown to stabilize mood and reduce mental fatigue for up to six hours, suggesting that fighting the afternoon mental slump may start in the morning," Moon said. A small 2026 study saw these effects when people consumed the equivalent of about 1 cup of fresh mushrooms.
Mushrooms may enhance cognition not just in the short term but over longer periods, too. In one study that followed subjects for 18 years, people who ate more mushrooms had better cognitive performance than those who ate fewer. "It appears to be dose-dependent, which is to say, the more mushrooms, the better," Moon said.
Sauté a few mushrooms in olive oil, fold them into a scramble or omelet, layer them atop toast spread with Greek yogurt or cottage cheese, or add them to a breakfast porridge.
5. Avocado

Avocados contain lutein, an antioxidant important for brain health.
Higher levels of lutein have been associated with better cognitive performance, including memory and problem-solving. In one randomized controlled trial, older adults who ate one avocado per day for six months had increased lutein levels, along with improvements in working memory, problem-solving efficiency, and sustained attention.
Bazilian added that avocado's other nutrients, monounsaturated fats and fiber, support blood flow and help keep blood sugar more stable. "Supporting circulation and steady energy are two of the more immediate ways nutrition shows up in how we think and feel," she said.


