27.01.2025.
Ever feel like your body has its own schedule? That’s because it does! Your internal clock, or circadian rhythm, isn’t just about when you wake up or fall asleep.
Experts say it influences how your body digests food, burns energy, and even handles stress.
What is your circadian rhythm?
Think of it as your body’s 24-hour rhythm, synced with the cycle of day and night. It’s responsible for:
- Regulating your sleep-wake cycle.
- Controlling hormones like insulin and cortisol.
- Managing energy balance, including how your body stores and uses food.
Your circadian rhythm responds to environmental cues like light, temperature, and—surprise—when and how you eat.
Feeding and fasting: timing matters
Your body is designed to follow a natural pattern:
- Daytime (Feeding): It’s all about energy intake and storage. This is when your body fuels up for activity.
- Nighttime (Fasting): Time to rest, repair, and renew. During fasting, your body taps into stored resources and kicks off processes that aren’t active when you’re eating.
Recent research shows that intermittent fasting (giving your body extended breaks between meals) can do wonders for your health:
- Boosts repair mechanisms.
- Increases adiponectin, a hormone that supports heart health and reduces stress.
- Improves brain health by increasing brain-derived neurotrophic factor (BDNF), which enhances memory and protects against disease.
Why sleep and eating go hand in hand
Sleep and eating habits work together like best friends. Poor sleep can mess up hormones, reduce BDNF* levels, and even disrupt your gut microbiome. Your gut bacteria also follow a circadian rhythm, and what you eat can either support or throw it off balance.
Seasonal eating matters
Eating fruits and veggies in season isn’t just trendy—it’s smart. Polyphenols (natural compounds found in plants like green tea or blueberries) can help regulate your circadian rhythm. For example:
- Green tea’s EGCG boosts fat metabolism and supports your internal clock.
- Seasonal fruits might impact hormones like leptin, which controls appetite, depending on the time of year.
Tips for staying in sync
Here’s how you can align your lifestyle with your body’s natural rhythm:
- Stick to regular mealtimes. Late-night snacking can confuse your system.
- Try intermittent fasting. Give your body time to repair and recharge.
- Get enough sleep. Poor sleep reduces critical hormones like adiponectin and BDNF.
- Eat with the seasons. Enjoy nature’s bounty during its prime.
Your body thrives on rhythm. By syncing your eating, sleeping, and activity patterns with your circadian clock, you can boost energy, improve mental health, and keep your body in balance.
* The BDNF gene provides instructions for making a protein found in the brain and spinal cord called brain-derived neurotrophic factor. This protein promotes the survival of nerve cells (neurons) by playing a role in the growth, maturation (differentiation), and maintenance of these cells
SOURCES
Diet and Mental Health: Review of the Recent Updates on Molecular Mechanisms https://pmc.ncbi.nlm.nih.gov/articles/PMC7222344/
