In our modern world, maintaining mental health often involves more than traditional therapies and self-care practices.
A big piece that gets overlooked is something happening inside your body all the time: your hormones.
They quietly shape how you feel—your mood, your energy, your motivation, and sometimes, that vague sense that something is just off, even when nothing is obviously wrong.
If stress is your body’s alarm system (as explored in my earlier article: Fight or Flight: What Your Stress Response Actually Does and Why), then cortisol is the fuel that keeps that alarm running. And if you’ve ever found yourself searching things like “what causes high cortisol” at 1 a.m., you’re already brushing up against this system in real life.
Cortisol: The Stress Hormone That Doesn’t Work Alone
Cortisol is often labeled as “bad”, but that’s not exactly accurate. It’s actually one of your body’s core survival tools produced by your adrenal glands and is designed to help you respond to stress. In short bursts, it’s protective, it sharpens focus, increases energy availability, and helps you react quickly.
Where things start to feel different is when it doesn’t really turn off.
Most of the time, cortisol follows a natural rhythm, high in the morning to help you wake up, and gradually lower at night so your body can rest. When your brain keeps detecting “threats”, it keeps signaling the body to release cortisol. Over time, this can shift your system into a prolonged state of alert. This is usually when people start describing the same thing in different ways: “I’m always tired, but wired”.
Do Everyday Things Really Trigger Cortisol?
Yes, and not just big events.
Common cortisol triggers include:
- broken sleep or inconsistent routines
- jumping between tasks all day
- emotional tension you never really processed
- long gaps between meals or blood sugar swings
- too much caffeine, especially when you’re already depleted
What may be most important, is that your brain doesn’t always separate emotional stress from physical stress. A difficult conversation, a packed inbox, and lack of sleep can all be processed as the same signal to our brain: something requires survival energy now.
When Stress Becomes Burnout
When cortisol stays elevated for too long, it doesn’t just affect how you feel, it affects how you function. This is often where burnout begins to show up.
Burnout isn’t simply exhaustion. It’s a state where the stress-response system has been activated so frequently that recovery feels harder to access. People often describe it as feeling emotionally numb, mentally foggy, or constantly drained no matter how much they rest.
This is also why “burnout therapy” approaches tend to focus less on pushing through stress and more on restoring regulation, sleep repair, boundaries, nervous system recovery, and reducing overall load.
Cortisol Testing
So how do you even measure cortisol? In short, cortisol tests exist, but the reality is a bit more nuanced than a single number. That is because cortisol follows a natural daily rhythm, meaning levels fluctuate significantly throughout the day. In clinical settings, providers may measure cortisol using blood, saliva, or urine depending on your history and presenting systems.
While lab results can provide helpful insight, cortisol in particular is often better understood by looking at patterns over time. In other words: how you feel across mornings, afternoons, and evenings can tell a more meaningful story than a single lab result alone.
Overwhelmed vs. Overstimulated: Why It Matters
Not all stress feels the same, even though cortisol may be involved in both.
- Overwhelm is that heavy feeling, like you’re carrying too many things at once, emotionally or mentally. It’s the sense that everything is important, and you don’t know where to start.
- Overstimulation feels different. It’s faster. More jittery. Too much input, too quickly, screens, notifications, noise, switching tasks without a break.
While both can activate the body’s stress response, they often require different approaches to recovery. Overwhelm is often eased through prioritization, support, and reducing mental load. Overstimulation, however, is typically better addressed through quiet, stillness, and intentional breaks from sensory input.
Recognizing the difference can completely shift how you approach stress relief, and help you better understand what your body needs most in the moment.
Where Sex Hormones Fit Into The Picture
This is where things start to become more interconnected.
Sex hormones, estrogen, progesterone, and testosterone, don’t operate in isolation. They don’t just regulate reproduction; they’re part of the same wider system that includes mood regulation, motivation, sleep, and stress response.
Each of these hormones plays a slightly different role in how you feel day to day. Estrogen, for example, is closely linked to mood and cognitive function, while progesterone is often associated with calming and sleep-supporting effects. Testosterone, in all genders, contributes to energy, motivation, and overall drive.
Because these hormones are part of a larger system, lifestyle factors can meaningfully influence how they function. Nutrition, movement, sleep, and stress all play a role. For example, foods like flaxseeds and soy contain phytoestrogens that may support estrogen activity, while strength training, adequate sleep, and nutrients like zinc can help support healthy testosterone levels. Similarly, vitamins such as vitamin B6 and magnesium, found in foods like bananas and leafy greens, can help support progesterone production, alongside consistent sleep and stress management.
Your stress system and hormone system are constantly communicating, and how one functions can directly influence how the other feels. Because of this, the goal isn’t to optimize one hormone in isolation, but to view and support the system as a whole.
The Takeaway
The bigger picture is this: your body isn’t random. Our health isn’t just psychological, but also biological, rhythmic, and deeply responsive to how we live day to day.
Cortisol, sex hormones, and the brain’s stress-response system are all a part of an interconnected loop. When that loop isn’t functioning optimally, we feel it, often in more ways than one.
By better understanding how these systems work, we can start recognizing patterns. Because once things feel readable, they also start to feel more workable.
Resources
Stress in America 2023 (2023).
American Psychological Association: Stress in America Report (2023)
Chu B, Marwaha K, Sanvictores T, et al. Physiology, Stress Reaction. [Updated 2024 May 7]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK541120/
Understanding the Stress Response (2024).
Progesterone (2022). https://my.clevelandclinic.org/health/body/24562-progesterone
Testosterone therapy: Potential benefits and risks as you age (2024). https://www.mayoclinic.org/healthy-lifestyle/sexual-health/in-depth/testosterone-therapy/art-20045728
George MY, Abdel Mageed SS, Mansour DE, Fawzi SF. The cortisol axis and psychiatric disorders: an updated review. Pharmacol Rep. 2025 Dec;77(6):1573-1599. doi: 10.1007/s43440-025-00782-x. Epub 2025 Sep 16. PMID: 40956392; PMCID: PMC12647353.
Estrogen (2026). https://my.clevelandclinic.org/health/body/22353-estrogen
Cortisol: What it does and how it works (2025). https://my.clevelandclinic.org/health/articles/22187-cortisol
