As the leaves change, so do you — literally. Discover how seasonal shifts in light, temperature, and behavior impact brain chemistry, sleep cycles, and even how your medications work.
Shorter daylight hours in the fall trigger real biological changes in your brain. Less sunlight reduces serotonin production — the “feel-good” neurotransmitter that helps regulate mood, appetite, and focus.
That dip in serotonin is one reason some people experience symptoms of Seasonal Affective Disorder (SAD), including low energy, irritability, and cravings for carbs.
Meanwhile, melatonin — the hormone that helps regulate sleep — increases as darkness falls earlier in the day. This shift can lead to increased sleepiness, disrupted sleep cycles, and daytime fatigue.
How Circadian Rhythms Shift in the Fall
Your internal clock, or circadian rhythm, is influenced by light and darkness. In the fall, the earlier sunsets can confuse your brain into thinking it’s bedtime well before it really is.
This can affect when you feel sleepy, hungry, and alert. It also impacts the timing of many biological processes — including how your body metabolizes certain medications.
Medication Metabolism and Seasonal Change
Certain medications, such as antidepressants, blood pressure medications, and even insulin, can be affected by seasonal changes in your metabolism and hormone levels.
For example:
- Reduced sunlight may increase the need for higher doses of some mood medications
- Changes in sleep and activity levels may alter how quickly or slowly medications are absorbed or cleared from the body
- Less physical activity in colder months can also affect blood sugar levels and how diabetes medications work
Tips to Stay Balanced This Fall
- Spend time outdoors during daylight hours
- Keep a consistent sleep-wake schedule
- Consider light therapy if you experience SAD symptoms
- Talk to your pharmacist if you notice changes in how your medications affect you
- Stay active, eat balanced meals, and stay hydrated
We’re Here to Support Your Fall Wellness
At Toledo Family Pharmacy, we understand how seasonal changes can impact your health. If you’re feeling “off” this fall — whether physically or emotionally — let’s talk.
Our pharmacists can help you evaluate your medications, suggest supplements, or recommend wellness strategies that support your mood, energy, and overall health.
Stay well, stay informed, and check back soon for more science-backed seasonal wellness tips.
