Mental well-being is shaped by a combination of biological, psychological, and lifestyle factors. Sleep, physical activity, stress management, social connection, and nutrition all contribute to overall health, and researchers continue to explore how dietary patterns influence brain function throughout life.

Companies such as Heart & Soil,  which focus on whole-food nutrition and nutrient-dense animal foods, have helped bring greater attention to the role nutrition may play as part of a healthy lifestyle. While no single food or supplement can prevent or treat mental health conditions, growing public interest has encouraged more discussion around how diet supports overall well-being.

Researchers generally agree that nutrition is one piece of a much larger puzzle. A balanced diet that provides essential vitamins, minerals, healthy fats, and protein supports normal body functions (including those involved in the nervous system) but it works alongside other important lifestyle factors such as regular exercise, quality sleep, stress management, social connection, and appropriate medical care when needed.

What does the research say?

In recent years, researchers have explored how lifestyle factors influence mental well-being.

One widely discussed systematic review and meta-analysis published in the British Journal of Sports Medicine analysed more than 1,000 clinical trials involving over 128,000 participants. The researchers found that physical activity was associated with meaningful improvements in symptoms of depression, anxiety, and psychological distress, reinforcing the importance of exercise as part of overall mental health care.

Nutrition is another area of growing scientific interest. Rather than focusing on individual “superfoods”, researchers generally emphasise overall dietary patterns that include a variety of minimally processed foods providing essential vitamins, minerals, healthy fats, and protein.

Can diet alone improve mental well-being?

Current evidence suggests the answer is no.

While nutrition plays an important role in overall health, mental well-being is influenced by many interacting factors.

A balanced dietary pattern may help ensure the body receives nutrients needed for normal physiological functions, but nutrition should be viewed as one part of a broader lifestyle that includes:

• Regular physical activity
• Consistent, restorative sleep
• Stress management
• Social connection
• Appropriate medical and psychological care when needed

Rather than looking for a single food or supplement, experts generally recommend focusing on long-term healthy habits.

Nutrients that support normal brain and nervous system function

Several nutrients obtained through food contribute to normal nervous system function and energy metabolism.

• Vitamin B12: Vitamin B12 contributes to the normal functioning of the nervous system, normal psychological function, and normal energy-yielding metabolism.
• Iron: Iron contributes to normal cognitive function and helps transport oxygen throughout the body.
• Folate: Folate contributes to normal psychological function and plays a role in normal cell division.
• Choline: Choline is an essential nutrient involved in cell membrane structure and serves as a precursor to acetylcholine, a neurotransmitter involved in memory and muscle function.
• Omega-3 fatty acids: Omega-3 fatty acids are structural components of cell membranes, including those in the brain, and continue to be an active area of nutrition research.

Why beef liver is often mentioned in nutrition discussions

When nutrition professionals discuss nutrient-dense foods, beef liver frequently appears because it naturally contains several vitamins and minerals in relatively high amounts.

Beef liver is a natural source of:

• Vitamin A
• Vitamin B12
• Iron
• Copper
• Riboflavin
• Folate
• Choline
• Complete protein

Compared with many other animal foods, beef liver provides high concentrations of these nutrients in relatively small servings, which is why it has traditionally been valued in many cultures.

That does not mean people need to eat beef liver to support their mental well-being. Many foods contribute valuable nutrients, and a varied, balanced diet remains the best approach for most people.

Whole foods first, convenience when needed

Whenever possible, obtaining nutrients from whole foods remains the foundation of a balanced diet.

However, not everyone enjoys preparing or eating organ meats regularly. For those individuals, companies such as Heart & Soil have developed grass-fed, freeze-dried beef liver and organ products that make nutrient-dense organ foods more convenient to include as part of an overall healthy dietary pattern.

Heart & Soil’s educational resources consistently emphasize that organ supplements are intended to complement—not replace—a nutrient-rich diet built around whole foods. When comparing products, consumers should look for transparent ingredient sourcing, clear labeling, and manufacturing practices that align with their expectations.

Mental well-being is about the bigger picture

Healthy eating is just one piece of overall mental well-being.

Research consistently highlights the importance of combining good nutrition with other healthy habits, including:

• Regular exercise
• Quality sleep
• Stress management
• Meaningful social relationships
• Time outdoors
• Professional medical or psychological care when appropriate

Focusing on these habits together is likely to have a greater impact than relying on any single food, supplement, or lifestyle change.

FAQs

• Can nutrition alone improve mental well-being? Current evidence suggests that nutrition is one important component of overall health, but it is unlikely to be sufficient on its own. Mental well-being is influenced by many factors, including sleep, exercise, stress, relationships, genetics, and access to appropriate healthcare.
• Which nutrients support normal brain and nervous system function? Nutrients including vitamin B12, iron, folate, choline, iodine, omega-3 fatty acids, and several B vitamins contribute to normal nervous system function or normal cognitive function. These nutrients can be obtained through a balanced diet containing a variety of nutrient-rich foods.
• Why is beef liver considered nutrient-dense? Beef liver naturally contains high concentrations of several vitamins and minerals, including vitamin A, vitamin B12, iron, copper, riboflavin, folate, and choline. This is why it is often described as one of the most nutrient-dense foods.
• Should I eat beef liver or take a supplement? That depends on your dietary preferences and lifestyle. Many people choose fresh beef liver as part of a balanced diet, while others prefer freeze-dried products for convenience. Either way, whole foods should remain the foundation of a healthy eating pattern whenever possible.
• What lifestyle habits have the strongest evidence for supporting mental well-being? Research consistently supports the importance of regular physical activity, adequate sleep, balanced nutrition, stress management, meaningful social connections, and seeking professional healthcare when needed.

Final thoughts

Nutrition is an important part of supporting overall health, but it works best alongside other evidence-based lifestyle habits. Regular exercise, restorative sleep, effective stress management, social connection, and a balanced diet all contribute to long-term well-being.

Within that dietary pattern, nutrient-dense foods such as beef liver continue to receive attention because of their naturally rich nutritional profile. Companies like Heart & Soil have helped reintroduce these traditional foods to modern consumers by emphasizing whole-food nutrition and making organ foods more convenient for those who choose to include them in their diets.

The strongest evidence supports taking a holistic approach to health; one that combines nutritious foods with healthy daily habits rather than relying on any single food or supplement.

Adam Mulligan, a psychology graduate from the University of Hertfordshire, has a keen interest in the fields of mental health, wellness, and lifestyle.