Finally…it’s springtime.
Longer days. More sunshine. Warmer temperatures. And everything in nature is coming back to life.
And yet…many people will feel sluggish, unmotivated, and exhausted as winter fades away. It’s downright counterintuitive.
If this sounds familiar to you, the way you’re feeling isn’t a figment of your imagination. Spring fatigue is a surprisingly common phenomenon. And for many people, hormones are the culprit.
Is Spring Fatigue a Real Thing?
The short answer is, yes.
Spring fatigue is simply a period of low energy, mood shifts, and physical sluggishness that some people experience during the transition from winter to spring. Rather than feeling reinvigorated as the season changes, these individuals feel drained—and sometimes for weeks at a time.
Feeling this way tends to catch people off guard. After all, the assumption is that more sunlight and warmer weather should mean more energy—not less.
The problem is that the body’s transition out of winter involves significant internal adjustments that can temporarily leave people feeling worse…before they feel better.
What’s Happening Hormonally During Early Spring
During winter, your body adapts to shorter days and less sunlight. Melatonin production increases to align with longer nights, cortisol rhythms shift, and the body essentially settles into a lower energy state. This is a normal biological response as winter sets in.
However, when spring arrives and days get longer, the body has to recalibrate. And that recalibration takes time and energy.
Circadian rhythm has to adjust. Melatonin production has to be dialed back. Cortisol patterns shift again. And serotonin levels fluctuate.
But that’s not all. For people whose hormonal systems are already under stress or out of balance, this seasonal adjustment can be particularly challenging.
The Hormonal Factors That Can Make the Spring Transition Worse
Spring fatigue tends to hit harder when underlying hormonal imbalances are already present. Here’s why:
Cortisol
Cortisol levels (when functioning properly) follow a daily rhythm—rising in the morning to wake you up, and then gradually declining as the day progresses (so you can fall asleep at night).
Seasonal transitions temporarily disrupt this rhythm.
For people who already suffer from adrenal stress or dysregulated cortisol production, this disruption often means pronounced grogginess in the morning, energy levels that crash in the afternoon, and a general lack of alertness throughout the day.
Thyroid
Thyroid function is deeply sensitive to seasonal changes. Some research suggests thyroid activity actually fluctuates between seasons. This may be why people with subclinical or undiagnosed hypothyroidism often have amplified symptoms during seasonal changes.
In other words, if you’re already vulnerable to fatigue, brain fog, and sluggishness, a thyroid that isn’t performing optimally can make these symptoms worse.
Testosterone
Both men and women rely on healthy testosterone levels for energy, motivation, and drive. When testosterone is low, the seasonal dip in energy that comes with early spring can feel more pronounced.
Where a hormonally healthy person might shake off winter sluggishness within a week or two, someone with low testosterone can feel stuck in that low-energy state for longer.
Vitamin D
After months of limited sun exposure, vitamin D levels are often at their lowest during late winter and early spring. This matters because vitamin D functions more like a hormone than a traditional vitamin in the body, influencing everything from immune system function to mood.
This means that low vitamin D can quietly amplify fatigue and mood issues during the transition to spring.
Serotonin
More daylight often boosts serotonin production. This sounds like it should be a good thing, right?
But rapid fluctuations in serotonin during the transition to spring can temporarily destabilize mood and energy levels, particularly for people whose estrogen or progesterone levels are suboptimal. Estrogen in particular has a key role to play in serotonin activity. This why women in perimenopause often notice mood and energy changes that coincide with seasonal shifts.
How to Support Your Body as the Seasons Change
The good news is that spring fatigue isn’t something you have to simply endure. There are practical steps you can take to make the transition easier:
- Get outside early in the day. Morning sunlight resets your circadian rhythm and suppresses excess melatonin production, giving your body the signal it needs to wake up.
- Check your vitamin D levels. A simple blood test can confirm whether or not low vitamin D is contributing to your fatigue. Vitamin D supplementation is easy and can make a meaningful difference in how you feel.
- Support quality sleep. As days get longer, it can be tempting to stay up later at night. Resist that urge. Maintaining a consistent sleep and wake schedule will help your body to adjust more efficiently.
- Get your hormones tested. If spring fatigue feels like a month-long energy drought rather than a brief adjustment period, hormonal imbalances may be amplifying the problem.
Don’t Chalk It Up to Seasonal Changes
Seasonal fatigue that is severe, that lingers, or that has been a recurring pattern year after year, is worth investigating. For many people, the underlying driver isn’t the season itself. Rather, it’s a hormonal imbalance that the seasonal transition is simply exacerbating.
At Renew Youth, we’ve been helping men and women to identify what’s really behind their fatigue since 1999. Call us at (800) 859-7511 or use our easy contact form to schedule your complimentary 30-minute consultation.