Fueling the Brain: How Nutrition Supports Academic Success

In my role as a social work intern with the LSU College of Science’s Dr. Mary & Ron Neal Student Success Center, I often see how students’ lives outside the classroom can affect their success inside the classroom. Academic performance involves studying, along with taking care of one's overall well-being. This would include paying attention to one's stress levels, staying well-rested, eating nutritious foods, and taking care of one's mental health. 

I found myself fascinated with the nutrition aspect of students' success and turned to experts across campus for insight. They emphasized that healthy eating habits can sustain energy levels, stabilize mood, and support overall well-being throughout the semester. I also explored the underlying science to better understand how nutrition influences brain function and learning.

Nutrition Beyond Diet Culture

When most people talk about nutrition, the focus often gets shifted to weight, appearance, or dieting. According to Emily Caire, registered dietitian at the LSU Student Health Center, this limited perspective could cause us to miss the bigger picture, which is that food has many functions and impacts. 

“Diet culture often emphasizes thinness and appearance over health, but a balanced eating plan supports brain function, energy levels, mood, athletic performance, and long-term health.”

Emily Caire, Registered Dietitian, LSU Student Health Center

For students juggling classes, exams, extracurricular activities, and sometimes jobs, proper nutrition can make a difference. Applying principles of a healthy diet can fuel focus, sustain energy and build the stamina needed to stay engaged and perform at their best. Nutrient-dense choices like fresh fruits, nuts, protein, healthy fats, and whole grains can make a measurable difference across the entire semester.

The Foundations of a Healthy Diet

The World Health Organization highlights the four key principles of a healthy diet: adequacy, balance, moderation, and diversity. To simplify, it is important to get enough nutrition to support your body, balance different food groups, limit others to moderation, and include a variety of foods in your diet.

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Principles of Healthy Diets

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Putting these principles into practice can be very difficult for college students due to busy schedules, limited budgets, and easy accessibility to fast food. Caire explained that although nutrition advice is widely available, misinformation can make things confusing. 

“In my 19 years of experience as a registered dietitian, once we get through the misinformation about nutrition and eating habits, most people already know what they should do,” Caire said. “The real challenge is putting those habits into practice.”

The Science Behind Nutrition and Learning

Nutrition supports not only physical health but also the biological processes that allow the brain to function effectively. The brain requires a constant supply of nutrients to support processes involved in memory, attention, and learning.

"We all know that we need our brains to think, but many of us don't realize just how much glucose our brains need to operate at 100%. I worry that students are showing up to exams, lab sections, and lectures having just skipped a meal. They're bringing versions of themselves that aren't firing on all cylinders, and unfortunately, that is going to show when they try to perform. The science on this is established," said Dr. Justin Ragains, Associate Dean of Academic Services in the College of Science and Dr. Philip W. & Foymae Kelso West Distinguished Professor in Chemistry.

Glucose, which comes from carbohydrates, serves as the brain’s primary source of energy. When students skip meals or rely heavily on foods that cause rapid spikes and crashes in blood sugar, they may experience fluctuations in energy that can make it more difficult to stay engaged during classes or long study sessions.

“If we starve the brain of glucose, it can’t do its normal function. This is when we start running into problems involving short-term memory, memory consolidation, and focus,” said Dr. David Vinyard, associate professor in the LSU Department of Biological Sciences.

“Consistency in your meals is the key to successful exams and study periods. Everyone should be eating breakfast and lunch consistently, along with healthy snacks, which can be as simple as a cheese stick or an apple.” 

Dr. David Vinyard, Associate Professor, LSU Department of Biological Sciences

Other nutrients also play key roles in brain health. For example, omega-3 fatty acids help support the structure and function of brain cells, B vitamins assist with energy metabolism in the brain, and iron is important for delivering oxygen to brain tissue. Diets that include a variety of fruits, vegetables, whole grains, healthy fats, and lean proteins help provide these essential nutrients.

“We have good physiological evidence that diets rich in omega-3 fatty acids lead to reduced overall inflammation. This is good for your entire body, including the brain. These omega-3 fatty acids are mostly synthesized by photosynthetic organisms like algae and plants. Vertebrates like fish or invertebrates like shrimp and crawfish eat those algae, allowing them to be rich in omega-3s,” Vinyard said.

Support for LSU Students

Recognizing the challenges students face in maintaining healthy eating habits, the LSU Student Health Center’s Wellness and Student Support programs offer individual nutrition counseling to full-time students at no out-of-pocket cost.

During one-on-one appointments, Caire works with students to identify barriers that may prevent them from maintaining healthy eating habits. Together, they develop practical strategies that can gradually fit into students’ daily routines.

“Instead of trying to overhaul everything at once, we focus on small changes that can realistically be incorporated into a student’s lifestyle,” she said.

LSU also provides several resources to help students make informed and accessible food choices. The LSU Food Pantry helps supplement groceries for students experiencing food insecurity, ensuring that access to nutritious food is not a barrier to success.

Students who eat on campus can also benefit from LSU Dining’s online menus, which include detailed nutritional information for daily offerings. This allows students to review ingredients and nutritional facts in advance and make choices that align with their health and energy needs.

 

Small Choices, Big Impact

Student success is shaped by many different factors, and nutrition is one of them. By creating a balanced diet using the resources available on campus, students can support their long-term academic goals.

Prioritizing good nutrition can help students maintain the energy, focus, and well-being they need to thrive during their time at LSU and beyond.