Mental Health Blood Test? 4 Things to Check on Your Blood Work

This post is about mental health blood test.

Written by a previous trauma therapist, a Licensed Master Social Worker, and current PhD Student learning how to bridge the gap between theology and psychology.

Disclaimer: This post uses affiliate links. I may earn a small commission on purchases (at no extra cost to you).

Mental health blood test? Have you ever wondered if there is a blood test for anxiety and depression? Is there a mental health blood test? Sadly, there are not specific tests that will tell you if you have a mental health diagnosis, but your blood work can actually tell us you a lot about your mental health symptoms. Today, let’s look at the science behind how one’s blood work could say a lot about one’s mental health.

Is there a blood test for anxiety and depression?

Note from Author: While I am a Licensed Master Social Worker, the information in this post is for educational purposes and reflects my personal practice philosophy. It is not medical advice or a substitute for a professional diagnosis. If you are experiencing these symptoms, please consult with your primary care provider. Reading this blog does not establish a therapist-client relationship.

Did you know there is one crucial step that people skip over when deciding to start therapy? Many people will spend years in therapy and never realize their mental health symptoms could be caused or exacerbated by vitamin deficiencies, hormonal imbalances, and even food allergies! Many physical health conditions actually produce symptoms that replicate mental health conditions. Personally as a therapist, I have seen numerous clients that have been misdiagnosed with anxiety, depression, bipolar, etc. due to physical conditions. Having one’s bloodwork and annual physical should be seriously considered before starting therapy. It has helped catch so many issues that individuals could have spent years struggling with, thinking that it was only “mental health” related. 

Here are some of the common physiological conditions that can cause mental health symptoms. 

Hormonal and Glandular Issues

The thyroid is a small gland in the neck that acts as the body’s control center for energy and mood. If the thyroid is underactive, a condition called hypothyroidism, it can cause feelings of deep sadness, constant tiredness, and slow thinking that looks exactly like clinical depression. If the thyroid is overactive, known as hyperthyroidism, it can cause a racing heart, shaking hands, and intense nervousness that feels like a panic attack or general anxiety. Other glands, like the adrenals, can pump out too much stress hormone, making a person feel constantly “on edge” even when nothing is wrong.

Lack of Essential Nutrients

The brain requires specific vitamins and minerals to create the chemicals that regulate our emotions. If you are low on Vitamin B12 or folate, you might experience memory loss, confusion, or a very low mood. Vitamin D is another essential nutrient that helps the brain function, and a lack of it is closely linked to seasonal depression. Low iron levels can lead to anemia, which leaves the body and brain without enough oxygen. This often results in “brain fog,” extreme exhaustion, and a lack of motivation that is frequently mistaken for depression.

Food Allergies and Sensitivities

The connection between the gut and the brain is very strong. When you eat something you are allergic or sensitive to, your immune system views that food as a threat and attacks it. This attack creates inflammation throughout the body. These inflammatory signals can travel to the brain and interfere with “feel-good” chemicals like serotonin. This can cause sudden irritability, “brain fog,” or mood swings. In some cases, undiagnosed food sensitivities can cause a person to feel hyperactive or lose focus, which can be misdiagnosed as ADHD.

Blood Sugar and Organ Function

The brain relies on a steady supply of sugar for energy. If your blood sugar is too high or too low, such as in undiagnosed diabetes, it can cause rapid changes in your personality, including anger, confusion, and crying spells. Additionally, the liver and kidneys are responsible for filtering toxins out of your blood. If these organs are not working correctly, waste products can build up in your system and affect your brain, leading to agitation, personality changes, or a general feeling of being unwell.

Christian Book Recommendations

Are You Really OK? by Debra Fileta – In this book, she guides readers through a comprehensive check-in of their emotional, mental, spiritual, and physical health. She explicitly discusses how taking care of our physical bodies—including checking our hormones, sleep, and nutrition—is inextricably linked to our mental and spiritual well-being.

Grace for the Afflicted by Matthew S. Stanford is another excellent recommendation that bridges the gap between science and faith. Stanford, a Christian neuroscientist, addresses the exact intersection of biological health and mental health that your post brings to light. He breaks down how the church has often misunderstood mental health by treating it solely as a spiritual issue, rather than recognizing the deep physiological roots—like brain chemistry, bodily systems, and organ function—that can cause or exacerbate these symptoms.

Ready to level up your mental health—starting right now? You can unlock our entire library of recommended titles for FREE in the next 60 seconds. Claim your [Free 30-Day Kindle Unlimited Trial] to get instant access to these books and thousands of other wellness resources on any device. (Selection subject to change; check page for current availability.)

Final Thoughts

If you are thinking about starting therapy, the first step you should consider is meeting with your primary care provider to discuss routine blood work. Ruling out any underlying physical conditions could save you months or even years from struggling with symptoms that could be alleviated through the care of a primary doctor. I will always advocate for individuals to start therapy, but it is always a good idea to take a step back and make sure there isn’t anything else putting your body under stress! 

I hope you enjoyed today’s topic! As we go into the new year I hope this blog will be a safe space for you to explore your faith and your mental health. I always enjoy hearing you guys suggestions and life updates so please make sure and leave a comment below! 

I hope you have the best and most blessed day ever! 

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Disclaimer

Educational and Spiritual Support Only: I am not your therapist. The information provided on this blog—including book recommendations, worksheets, biblical insights, coping skills, or any other content on this blog—is for  educational, informational, and spiritual encouragement purposes only. No Professional Relationship Interacting with this content, including leaving comments or sending direct messages, does not create a therapist-client relationship. This blog is not a substitute for professional medical advice, diagnosis, or treatment.

Seek Professional Help: Always seek the advice of your physician or a licensed mental health provider regarding any medical or psychological condition. Never disregard professional advice or delay seeking it because of something you have read here. If you are in a crisis, please contact your local emergency services or a crisis hotline immediately.