There isn't one single genetic marker for anxiety; instead, it's influenced by multiple genes interacting with environmental factors, but key candidates involve genes related to serotonin (like 5-HTTLPR, PDE4B), stress response (like FKBP5, CRHR1, MAOA), and neurotransmitters, with recent studies linking genes like ESR1 (estrogen receptor) and novel variants in TRPV6 to increased risk. These genetic predispositions increase susceptibility, but life experiences, diet, and stress modify gene expression, affecting anxiety development.
There is no single “anxiety gene,” but rather many genes that interact to predispose someone to anxiety, Dr. Bauer says. Then, through a biochemical process called DNA methylation, our environment—what we eat, how we sleep, the air we breathe, the stress we face—can alter the expression of our genes.
23andMe takes into account more than 7,700 genetic markers to estimate the likelihood of being diagnosed with anxiety, but keep in mind that other genetic factors not covered by this test and non-genetic factors can also influence a person's overall likelihood of developing an anxiety disorder.
The stress-related dysregulation of the HPA axis in mood and anxiety disorders can be assessed by measuring the peripheral biomarkers, such as plasma, urinary, hair, and salivary cortisol, or the releasing factors (CRH and ACTH) and neurotransmitters (epinephrine and norepinephrine).
9,10 Though MTHFR gene mutations are associated with increased risk of a variety of common mental health conditions including depression and anxiety, B vitamins show promise in modulating these and other disease risks in those with homozygous MTHFR 677T mutations.
Doctors often don't believe in routine MTHFR testing because current scientific evidence shows that a gene variation alone isn't a strong predictor of disease, and testing asymptomatic people leads to unnecessary anxiety, costs, and treatments, with better tests (like homocysteine levels) available to guide care if needed. Major medical organizations discourage it, finding that a healthy lifestyle is more beneficial, and treating the variant itself doesn't change outcomes for many conditions, say RACGP, National Institutes of Health (NIH), and American College of Medical Genetics and Genomics (ACMG).
Scientific studies confirm a direct link between deficiencies in certain nutrients and symptoms of anxiety. Specifically, vitamin D and B vitamin deficiencies are strongly linked to the development of anxiety disorders.
A big event or a buildup of smaller stressful life situations may trigger excessive anxiety — for example, a death in the family, work stress or ongoing worry about finances. Personality. People with certain personality types are more prone to anxiety disorders than others are. Other mental health disorders.
Adrenal Stress Test
Chronic stress levels can cause disruptions in the HPA (hypothalamic-pituitary-adrenal) axis, contributing to symptoms of GAD. A test to analyze the cortisol (primary stress hormone) levels can identify the underlying factors related to stress and anxiety.
If Anxiety or Depression Runs in Your Family
In most cases, the younger the person is when they get anxiety or depression, the more likely it is to be hereditary. Anxiety and depression can still be genetic if they show up in your older family members.
Genomind takes a broader approach, analyzing multiple genes to provide insights into everything from psychiatric medications to supplements and lifestyle factors. Both are excellent options, but GeneSight's targeted focus makes it an ideal choice for depression treatment.
Worry excessively about everyday things. Have trouble controlling their worries or feelings of nervousness. Feel irritable or “on edge” frequently. Feel restless or have trouble relaxing.
This is the first genetically informed study to assess transactional associations between parent and child anxiety symptoms during middle childhood. Using adoption data from the EGDS, we showed that child anxiety symptoms at age 7 prospectively predicted maternal, but not paternal, anxiety symptoms.
Anxiety is a mental health condition that causes ongoing worry that's hard to control. Experts don't know for sure what causes anxiety, but it seems there's a link to genetics, environment, and life experiences. Some of these things are beyond your control, which means anxiety can't be cured completely.
To cope with an anxiety disorder, here's what you can do:
A cortisol test measures the level of cortisol in your blood, pee or spit. You often need to get multiple cortisol tests because your levels naturally change throughout the day.
The most common type used to treat generalised anxiety are selective serotonin reuptake inhibitors (SSRIs), such as:
To diagnose an anxiety disorder, a doctor performs a physical exam, asks about your symptoms, and recommends a blood test, which helps the doctor determine if another condition, such as hypothyroidism, may be causing your symptoms. The doctor may also ask about any medications you are taking.
The #1 worst habit for anxiety isn't singular, but avoidance (procrastination), poor sleep, and negative thought patterns (like catastrophizing) are top contenders, creating vicious cycles where anxiety fuels these behaviors, and the behaviors, in turn, worsen anxiety by preventing healthy coping and creating more stress. Other significant habits include excessive caffeine, poor diet, too much screen time, and social withdrawal, all disrupting the body's ability to manage stress effectively.
Such conditions are currently treated with cognitive and dialectical behavioral therapy, as well as medications such as benzodiazepines and buspirone. It has recently been discovered that taking high doses of vitamin B6 supplements significantly reduces feelings of stress, anxiety, and depression.
Common Triggers for Anxiety Attacks
Deficiencies in B vitamins, particularly B12, B6, and B9, have been linked to symptoms of depression and anxiety. These vitamins are vital in producing chemicals, like serotonin, that affect mood.
Magnesium can help manage anxiety and insomnia by regulating serotonin and improving brain function, explains Dr. Madrak. Plus, it can improve other areas of our health, including digestion, cardiac function and sleep patterns. Suggested dose: Up to 250 milligrams before bed.
Difficult experiences in childhood, adolescence or adulthood are a common trigger for anxiety problems. Going through stress and trauma when you're very young is likely to have a particularly big impact. Experiences which can trigger anxiety problems include things like: physical or emotional abuse.