Stress and Nutrition: Which One Influences The Other Most

Debbie Graham

Stress is defined by the Oxford Dictionary as a “state of mental or emotional strain or tension resulting from adverse or very demanding circumstances.” Stressors can be physical or emotional, real or perceived, or acute or chronic; they can vary tremendously in their intensity and vary widely in their impact on an individual (Lopresti, 2019).

People worldwide experience stress, and in most cases, some type of stress occurs daily. Humans may stress over positive events, such as starting a new job or the birth of a child. However, stress can also be experienced around negative factors, such as problems at work, financial difficulties, health issues, etc. Responsibilities related to everyday life, such as a fast-paced lifestyle, juggling work and home life, or assisting senior citizen parents, can also result in stress. It is not uncommon for the experience of stress to lead to anxiety, fear, uneasiness, or apprehension.

It is no secret that working in the correctional environment is stressful simply because of the work requirements. For example, correctional officers must be constantly aware of their surroundings and monitor for threats of violence, altercations, or injury. Correctional officers, unfortunately, often witness traumatic situations such as inmate-on-inmate violence that may result in serious injury or death, incidents of self-harm, suicide attempts, or the death of an incarcerated person. Correctional officers often work long hours, and face constant staffing shortages or the expectation of doing more with less. Any or all of these scenarios, and many more, can cause psychological or physical stress.

It is common knowledge that stress can affect your physical health in multiple ways, including your nutritional health. However, what many may not know is how your nutrition can affect your experiences and how you deal with stress. Both stress and nutrition affect each other, so the question becomes similar to the “chicken and egg ” question: which one comes first, stress or nutrition? The answer is that either can come first, but more important than knowing which comes first, is to recognize that both stress and lack of proper nutrition can be detrimental to your physical and mental health.

The human body is an amazing organism that constantly self-regulates to maintain stability (equilibrium). Our bodies are fully capable of responding to stressors with physiological processes to deal with the stressor and then returning to equilibrium. This process is easily understood in the “fight or flight” concept. Our bodies release strong hormones in the face of fear or danger that set us up for a heightened ability to fight or escape from danger and then discontinue this process when the danger has ended. Even when a stressor is perceived, our bodies react in similar ways to assist us with the current state of events and then return to equilibrium. The danger comes when we are constantly dealing with stressors, and essentially, our bodies do not have an opportunity to return to equilibrium, and thus, the stressed state becomes the equilibrium. This heightened state of stress can lead to negative health manifestations, such as hypertension, obesity, chronic headaches, gastrointestinal issues, and mental health disturbances. Stress and anxiety can have a profound effect on our nutritional health, weight management, and overall well-being. However, our nutritional health can also have a profound effect on our level of stress and how we deal with stressors. There is truly a bi-directional relationship for the cause-and-effect connection between stress and nutritional health. This article will discuss this relationship, why each can contribute to the other, and pointers to overcome the negative effects of stress and unhealthy nutrition.

Negative Impacts of Stress Exposure

Elevated stress exposure results in excessive cortisol production. Cortisol is an important hormone that has many beneficial functions in the human body, one of which is to suppress inflammation. Unfortunately, when we experience high levels of cortisol, our body can become comfortable with the excess cortisol, which in turn leads to inflammation instead of suppressing it. Inflammation in the body is associated with cardiovascular disease, diabetes, weakened immune system, and mental health issues, and trending more and more is the association between inflammation in the body and cancer. Cortisol also encourages the storage of fat in the abdomen, which is connected to insulin resistance and a risk for type 2 diabetes as well as cardiovascular disease.

Stress exposure can also negatively impact gastrointestinal activity, bowel habits, and nutrient absorption. Additionally it causes nutritional alterations, i.e. vitamin/mineral deficiencies, metabolic needs, appetite, and eating habits. During the “fight or flight” response, the appetite is suppressed, but heightened levels of cortisol may increase the hunger response by way of cravings for foods that are generally highly processed and high in saturated fat, sugar, and calories, i.e., comfort foods. These types of food, as well as poor diet in general, contribute to elevated blood glucose that, in some cases, may eventually result in blood glucose that is too low, negative changes in cholesterol levels, especially LDL and triglycerides, hypertension, cardiovascular disease, and mood changes. For some people, stress may contribute to loss of appetite or inability to recognize hunger. When food intake is restricted, it leaves the body low on energy, and stress or anxiety can feel overwhelming. When you do finally feel hungry, you may grab unhealthy foods or overeat, causing uncomfortable fullness, guilt about what you ate and how much, and in turn, causing more stress or anxiety.

Stress, Nutrition, and Mental Health

Increasingly, studies are being conducted on the relationship between diet, stress, anxiety, and mental health disorders. The relationship is complex, as many factors must be considered to understand how one’s diet, eating habits, and nutritional status affect mental health. For example, eating foods high in sugar may cause an exaggerated elevation in blood glucose, which causes the body to release a large amount of insulin that, in turn, can result in low blood glucose due to the body’s large release of insulin. These highs and lows in blood glucose levels can cause anxiety, nervousness, shakiness, sweating, feelings of hunger, feeling unwell, and mood swings.

Studies have found vitamin and mineral deficiencies can affect not only one’s nutritional status but also one’s mental health status. Lower magnesium and zinc concentrations have been found in studies of people with depression (Lopresti, 2019). Diets deficient in folate and vitamins B6 and B12 have also been associated with depression (Bremmer, Mozzami, Wittbrodt, Nye, Lima, Gillespie, Rapaport, Pearce, Shah, & Vaccarino, 2020). However, more research is needed since while these types of deficiencies are associated with depression, there is no clear path as of yet to using these vitamins and minerals to prevent depression. Furthermore, studies have also found a link between various mental health conditions and inflammation. Studies are ongoing, as the causal roles that dietary inflammation has on mental health have not been definitively established. Observational studies have shown a relationship between higher consumption of pro-inflammatory foods, i.e. trans fats, refined carbohydrates, processed vegetable oils that contain high levels of Omega-6 fatty acids, and people with depression (Bremmer, Mozzami, Wittbrodt, Nye, Lima, Gillespie, Rapaport, Pearce, Shah, & Vaccarino, 2020). Consumption of nutritional food components, such as omega-3 fats, polyphenols, polyunsaturated fats, and dietary patterns such as the Mediterranean diet can assist with anti-inflammatory effects and may help to relieve or prevent depression.

Other studies being pursued with interest are looking at the working relationship between the brain and the gut and the possibility of the gut microbiome in improving mental health outcomes. There is a two-way communication via chemical signaling and messaging between the brain and the gut, which allows the brain to influence intestinal activities and the gut to influence mood, cognition, and mental health. This bidirectional relationship not only affects nutrient absorption and utilization, but also influences cognitive processes, mood regulation, and the brain’s capacity for adaptation and response to stimuli (Merio, G., Bachtel, G., and Sugden, S.G. (2024). Our diet choices significantly affect our body systems, including the microbiome composition of the gut. Imbalances in the gut microbiota, as well as inflammation, contribute to signaling and messaging imbalances in the brain and have been linked to mental health issues, including anxiety, depression, and mood changes. In addition to this interesting relationship between the brain and the gut, studies also continue on the microbiome and the gut’s part in a healthy immune system. Nutrition can positively or negatively influence the important balance of the gut microbiome. Readers should follow this research to learn more about the relationship between nutrition and mental health.

Positive Influences and Outcomes for Addressing Stress and Nutrition

With the understanding of the relationship between stress and nutrition, how do we positively influence both? To address stress, it is important to recognize when stressors are beginning to cause you stress or anxiety. Each individual is different and therefore, the level of stressors that have negative stress effects differ from person to person. The important part is to learn to recognize stressors and ways that work for you to interfere with the process of those stressors driving you to the point of being stressed out. We can’t always control life’s stressors, but we can control our processes of dealing with the stressors. Ideas may include mental health counseling, finding exercise activities that you enjoy, getting enough sleep, participating in a hobby you enjoy, and working on your nutritional status.

Consuming foods that contribute to your health fuels your body with the energy and stamina needed not only to thrive and survive but also to positively contribute to your mental health. A healthy eating pattern can be accomplished through consuming a healthy diet and having pride in how good food choices assist your overall health. Avoid consuming highly processed foods, added sugars, high saturated fat, and “junk food.” A good way to help you with this is to try to eat foods in their natural state rather than eating processed foods from a box or bag. When making food choices, also consider the importance of a healthy gut microbiome. To assist with building and maintaining a healthy and balanced gut microbiome, eat foods containing fiber, i.e., fruits, vegetables, grains, and legumes, and also fermented foods, i.e., sauerkraut, miso, kefir, sourdough, and yogurt that contains live cultures. Be careful about the ‘added’ sugar content in yogurt. Try to consume yogurt with the least amount of ‘added’ sugar, as sugar can be disruptive to a healthy gut microbiome. A good option is to purchase plain yogurt with live cultures and add your own fresh fruit to it. Taking prebiotics and probiotics can also be helpful, but these should not be considered a replacement for a healthy eating pattern. Work on making small, manageable changes instead of trying to change too many things all at once. Trying to change too much at one time can be overwhelming, which may result in failure to be able to maintain positive changes.

Correctional administrators should recognize the role that the correctional working environment has on their staff. Staff may become so stressed that it can feel commonplace, and they may not recognize how very stressed they are. Overwhelming stress levels can lead to mistakes in work performance, withdrawal from job responsibilities, complacency, absenteeism, poor eating habits and lifestyle, difficulty with anger management and emotions, feelings of inadequacy and failure, and even consideration of or attempting suicide. It is important for supervisors and facility administration to be engaged in their workforce, offer stress management programs and training, mental health counseling, career counseling, and don’t forget nutrition in this equation. The needs of our workforce have changed, and we must recognize those changes in order to recruit and retain staff in the correctional field. The workforce is looking for jobs and careers that meet and fit into their personal needs. They do not want to be just order takers and followers, but rather want to know that their employer is a place where they can make a difference and where their employer will listen to and really hear their ideas and needs, and implement changes that meet the workforce’s needs. This workforce understands that no one is ever the “one all, be all, end all.” A healthy working environment and a healthy lifestyle, including the promotion of adequate nutrition and life balance are important to the workforce of today.

Conclusion

Life is full of stressors, and it is impossible to avoid all of them. Remember that stress can affect your nutrition and overall health, and your nutrition patterns can affect how well you deal with stress. These influences are interdependent on each other. Either can come before the other, but each can also have a cause-and-effect connection. Everyone is different, which is important to consider. Therefore, work on positive influences and changes that can help you as an individual deal with stress, and always include a healthy eating pattern and lifestyle in the equation.

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Debbie Graham is a Registered Environmental Health Specialist/Registered Sanitarian and a Registered Dietitian. She spent 32 years in county government, with more than 28 of those years in corrections, retiring as a Division Chief in Miami, Florida. She can be contacted at fsbcmdrdebbie@yahoo.com

References

Lopresti, A.L. (2019). The Effects of Psychological and Environmental Stress on Micronutrient Concentrations in the Body: A Review of the Evidence. American Society of Nutrition, 2020;11:103-112. https://doi.org/10.1093/advances/nm082

Bremmer, J.D., Mozzami, K., Wittbrodt, M.T., Nye, J.A., Lima, B.B., Gillespie, C.F., Rapaport, M.H., Pearce, B.D., Shah, A.J., Vaccarino, V. (2020). Diet, Stress and Mental Health. Nutrients, 12, 2428; doi:10.3390/nu12082428. https://www.mdpi.com/2072-6643/12/8/2428

Merio, G., Bachtel, G., and Sugden, S.G. (2024). Gut microbiota, nutrition, mental health. Frontiers in Nutrition, 11:1337889; doi: 10.3389/fnut.2024.1337889. https://pmc.ncbi.nlm.nih.gov/articles/PMC10884323/)