Medically reviewed by Dr. Sireesha Kolli — Board-Certified Psychiatrist, Kolli Psychiatric & Associates, Red Bank, NJ
Last reviewed: July 2026

Introduction

In today’s fast-paced world, many of us feel emotionally off balance, constantly searching for ways to improve our mood and well-being. One of the key players in this process is serotonin, a neurotransmitter that influences mood, sleep, and our overall sense of contentment.

Modern life can quietly work against that balance. The good news is that several everyday habits genuinely support the systems involved in mood. The important part, and the piece most online advice gets wrong, is understanding what these habits actually do, so you can use them well and know when something more than a habit change is needed.

In this article, we will look at what serotonin is, how modern life affects it, and five practical habits that support mood, along with an honest picture of what they can and cannot do.

What Does Serotonin Do?

Serotonin, also called 5-HT, is a chemical messenger that carries signals between nerve cells in the brain and throughout the body. In the brain it is involved in mood, sleep, appetite, and anxiety. In the body it also helps run digestion, blood clotting, and other functions that have nothing to do with how you feel emotionally.

That last point is where the popular story gets tangled. You have probably seen the claim that about 90 percent of your serotonin is made in your gut, so improving gut health directly improves your mood. The first half is roughly true. The catch is that gut serotonin does not cross the blood-brain barrier, the protective filter around the brain. Your gut serotonin and your brain serotonin are essentially two separate pools doing different jobs. The serotonin that shapes your mood is made in the brain, from an amino acid called tryptophan.

This does not mean your gut and your diet are irrelevant to mood. It means the connection runs through indirect routes, such as the vagus nerve, the gut microbiome, inflammation, and the supply of tryptophan your brain needs, rather than gut serotonin traveling upstairs. That distinction changes what actually helps.

How Modern Society Hijacks Our Serotonin System

Several features of modern life work against the conditions that support healthy mood.

1. Indoor Lifestyles and Lack of Sunlight

For most of human history, people spent their days outdoors in natural light. Today many of us spend the daylight hours inside under artificial lighting, which is far dimmer than it feels. That matters, because brain serotonin turnover tracks with how much bright light there is and tends to be lowest in winter. Less bright light can leave some people prone to low mood and fatigue, which is part of why light exposure and seasonal mood are so closely connected.

2. Chronic Stress

The steady pressures of modern life keep many of us in a heightened stress state. Ongoing stress is associated with low mood, anxiety, and disrupted sleep, and it can affect the brain systems involved in mood regulation over time. This does not mean stress simply drains serotonin, but sustained stress does make emotional balance harder to maintain.

3. Over-Reliance on Technology

Phones and streaming offer constant, easy stimulation. The problem is less a chemical trade-off and more a matter of displacement: hours of short-form scrolling crowd out the activities that actually support mood, such as daylight, movement, real-world connection, and rest, while keeping the nervous system in a stimulated state when it could be winding down.

4. Poor Diet and Gut Health

Because so much of the body’s serotonin is produced in the gut, diet and gut health are often described as the key to mood. As noted above, gut serotonin does not travel to the brain, so the connection is indirect. Diets heavy in ultra-processed foods and low in fiber can disrupt the gut microbiome, and the gut communicates with the brain through routes such as the vagus nerve, immune signaling, and the supply of tryptophan the brain needs. So what you eat still matters for mood, just not for the reason the popular version suggests.

Why Does the Brain Produce Serotonin?

Serotonin acts as part of a signaling system that helps keep mood, sleep, and appetite in balance. When you are getting enough rest, light, movement, and nourishment, these systems tend to run more smoothly, and mood is easier to maintain. When those inputs are missing for a while, mood regulation becomes harder. That is why the habits below are less about chasing a chemical and more about giving these systems what they need to work well.

5 Hacks to Naturally Increase Serotonin

Here are five habits that support mood in a healthy, sustainable way. They work gradually and together, which is exactly why the benefits tend to last.

1. Get Sunlight Exposure Before Checking Social Media

One of the most effective ways to boost your serotonin levels is by exposing yourself to natural sunlight, particularly in the morning. Our ancestors evolved in environments where exposure to bright sunlight at the start of the day was critical for regulating serotonin and other mood-related chemicals. Sunlight acts as a natural signal to your brain to kickstart serotonin production, giving you the energy and emotional balance needed to face the day.

An excellent way to ensure you’re maximizing your serotonin is to delay looking at your phone or checking social media until after you’ve spent some time outdoors. Think of it as “earning” your social media time by first allowing your brain to soak up natural light.

How to Do It: Step outside in the morning for 5-15 minutes. On sunny days, aim for 5 minutes, while on cloudy days, stay outside for around 15 minutes to receive the same benefits.

Make a habit of avoiding your phone or social media until after you’ve had your morning sunlight. Use this time to focus on your surroundings, breathe deeply, and set a positive tone for the day.

Why It Works: Morning sunlight helps activate serotonin production by stimulating areas of the brain responsible for mood regulation. It also helps align your circadian rhythm, which ensures better sleep and mood throughout the day.

By waiting to check social media, you’re preventing the dopamine spikes that come with instant gratification from apps, which can actually deplete serotonin. This practice helps maintain balance and keeps your serotonin levels high.

2. Practice Resonance Breathing

Deep breathing is an incredibly effective way to boost serotonin, calm your mind, and activate the parasympathetic nervous system (which helps your body relax). One of the best methods for this is resonance breathing, where the goal is to slow your breathing down to just six breaths per minute. Unlike traditional meditation, which some people may find difficult due to an overactive mind, resonance breathing provides a more structured, achievable way to engage in a calming practice.

How to Do It: Try to breathe six times per minute by focusing on 10-second breathing cycles: inhale for 4 seconds and exhale for 6 seconds.

Practice this for 2 minutes each morning, preferably while sitting outdoors after getting your morning sunlight.
You can “gamify” it by challenging yourself to stick to the slow breathing pattern, which adds a mindful element to the practice.

Why It Works: Slow breathing helps activate the vagus nerve, which directly impacts serotonin production and helps regulate mood and stress.

The structured breathing technique not only lowers cortisol (the stress hormone) but also encourages serotonin release, helping to create a calmer, more balanced state of mind to start your day.

Pairing this with your morning sunlight routine amplifies the serotonin boost, ensuring both body and mind are in an optimal state.

3. Improve Gut Health

Your gut health plays a critical role in serotonin production, with about 90% of the body’s serotonin being produced in the gut. When you eat nutrient-dense foods, your gut can effectively manufacture serotonin, supporting mood regulation and emotional well-being. While nutrition advice can often be complex, a simple way to approach your diet from a serotonin perspective is to focus on whole, unprocessed foods—the kind of foods that existed on Earth before industrialization.

How to Do It: Prioritize whole foods like meat, fish, eggs, dairy, fruits, vegetables, nuts, and seeds. These are one-ingredient foods that haven’t been processed or altered.

When shopping, stick to foods that you recognize in their natural form. For example, a container of yogurt should list milk as the only ingredient, rather than a long list of chemicals you can’t pronounce.
Avoid highly processed, pre-packaged foods that contain many unfamiliar ingredients. For instance, a store-bought chicken Kiev or sandwich might have 20+ ingredients, most of which are artificial additives.

Why It Works: A diet rich in whole, unprocessed foods ensures your gut has the right environment to produce serotonin effectively. The more balanced your gut microbiome, the better your mood regulation and emotional stability.

Nutrient-dense foods provide the vitamins, minerals, and amino acids (such as tryptophan) necessary for serotonin synthesis. Whole foods stabilize blood sugar, preventing mood swings and maintaining serotonin levels throughout the day.

Processed foods and refined sugars can cause inflammation in the gut, disrupting serotonin production, while whole foods support a healthy gut ecosystem, promoting more stable serotonin output.

4. Spend More Time in Nature

Spending prolonged periods in nature is one of the most effective ways to boost serotonin. Humans evolved as hunter-gatherers, deeply connected to the natural world, and the further we drift from that connection, the more misaligned we become with our innate well-being. Reconnecting with nature isn’t just about getting fresh air—it’s about immersing yourself in an environment that naturally stimulates serotonin and other mood-enhancing chemicals.

How to Do It: Spend at least 30 minutes to an hour in nature regularly, whether that’s a park, a forest, or a beach.
While in nature, try to engage all of your senses: focus on what you can see (trees, grass, rivers), what you can hear (birds, wind), and what you can smell (fresh air, flowers).

Leave your devices behind—no music, podcasts, or phone distractions. Just you and your thoughts. This helps your brain fully relax and connect with the environment around you.

Aim to get into a “nature flow state” by becoming hyper-focused on your surroundings. Notice the details of the environment around you—this intentional focus helps trigger serotonin production.

Why It Works: Time in nature helps your brain and body reconnect with your natural, ancestral rhythms. This deep connection aligns you with the hunter-gatherer mindset, making it easier to crave natural, healthy behaviors like whole foods, sunlight, and restful sleep.

Neuroscientific research shows that when you spend time in nature, your heart rate and blood pressure lower, your thoughts slow down, and your brain perceives that it’s in a safe, calming environment. This naturally stimulates serotonin production and fosters a sense of well-being.
Walking without the distraction of a device encourages mindfulness and helps reduce overstimulation from the digital world, allowing your brain to rest and regenerate. This break from constant stimulation can significantly improve your mood and focus.

5. Prioritize Deep Sleep

Deep sleep is crucial for serotonin restoration and overall mood regulation. While many sleep strategies exist, one of the most overlooked aspects is the content you consume before going to bed. In our modern world, people often scroll through social media or watch short, stimulating videos right up until they fall asleep, which overstimulates the brain and makes it harder to achieve the deep sleep necessary for optimal serotonin production.

Instead, the key to improving your sleep quality—and by extension, your serotonin levels—is to create a calming routine before bed. Allow your brain time to wind down so it can transition smoothly into deep sleep, where serotonin restoration takes place.

How to Do It: Avoid social media after a certain time—set a cutoff around 9:30 PM. Use this time to send any messages or check updates, but then put the phone away to give your brain time to unwind.
If you enjoy watching something before bed, choose long-form content that is at least 15 minutes long, such as documentaries or calming YouTube videos. Keep the brightness low and the screen at a distance from your eyes to avoid overstimulation.

For the best results, practice deep breathing or meditation as part of your bedtime routine, which will calm your nervous system and prepare your brain for restful sleep.

Why It Works: Deep sleep is where most serotonin restoration happens, making it crucial for mood regulation and overall mental well-being. During deep sleep, the brain clears out toxins, regenerates cells, and restores neurotransmitter levels, including serotonin.

Consuming stimulating content (like social media or short-form videos) before bed keeps the brain alert and in a high-dopamine state, which interferes with the body’s ability to wind down and enter deep sleep.

Choosing calming activities like watching long-form content or practicing slow breathing helps transition the brain from an active state to a restful one, allowing for a smoother transition into deep, restorative sleep. The earlier you fall asleep (before midnight), the more restorative your sleep is, further supporting serotonin production and overall health.

By prioritizing deep sleep and optimizing your bedtime routine, you can improve your serotonin levels and ensure you wake up feeling more refreshed and balanced.

Frequently Asked Questions

Can you increase serotonin naturally?

You can support the systems involved in mood through daily habits, most reliably morning light, regular movement, good sleep, and lower stress. What you cannot do is turn serotonin up like a dial, and it is worth being cautious with anyone who promises exactly that. These habits help your overall mental health rather than fixing a single chemical.

Is 90 percent of serotonin really made in the gut?

Most of your body’s serotonin is indeed made in the gut, but that serotonin does not cross into the brain. It handles jobs like digestion. The serotonin that affects mood is made separately in the brain. So gut health can influence mood, but through indirect routes, not by sending gut serotonin to your brain.

Does low serotonin cause depression?

The simple idea that depression equals low serotonin is not well supported by current evidence, and depression is understood to be multifactorial, shaped by genetics, stress, biology, and life circumstances together. Importantly, this does not mean serotonin is irrelevant or that antidepressants do not work. Many people are helped by treatments that affect serotonin. It just is not a single-chemical story.

What foods increase serotonin?

No single food meaningfully raises brain serotonin. Protein-rich foods supply tryptophan, the building block the brain uses to make serotonin, and a whole-foods, fiber-rich diet supports the gut in ways linked to mood. Be skeptical of “serotonin foods” and supplements marketed with big promises, and check with your prescriber before adding a supplement to any medication.

Does sunlight really boost serotonin?

This one holds up better than most. Research has found that brain serotonin production tracks with how much bright light there is and is lowest in winter, which is part of why light exposure and seasonal mood are so closely connected. Morning light also supports your sleep-wake rhythm, which supports mood on its own.

When should I talk to someone about my mood?

If low mood or loss of interest has lasted more than a couple of weeks, is affecting your daily life, or comes with changes in sleep, appetite, or energy, it is worth talking to a professional. You do not need to wait until things feel unbearable, and getting evaluated does not commit you to any particular treatment.

Conclusion

Modern life can pull us away from the simple conditions that support a steady mood. The habits that help are refreshingly ordinary: get morning light, breathe slowly when you are wound up, eat in a way that supports your gut, spend unhurried time outdoors, and protect your sleep. Done consistently, they support your overall mental and physical health, which is a more realistic and more durable goal than trying to boost serotonin like flipping a switch.

It is also worth remembering that low mood is not simply low serotonin, and these habits are support rather than treatment. If low mood, loss of interest, or changes in sleep and appetite have lasted more than a couple of weeks or are affecting your daily life, that is worth evaluating rather than managing alone.

If you are looking for thoughtful, unhurried psychiatric care and want to understand what is behind how you have been feeling, our providers at Kolli Psychiatric & Associates offer in-depth evaluations for adults, teens, and children in Red Bank and by telepsychiatry across New Jersey. Learn how our evaluations work and how our practice is structured so you can decide whether we are the right fit before you book.

By incorporating these natural serotonin-boosting practices, residents in Red Bank, Middletown, Shrewsbury, Fair Haven, Holmdel, Little Silver, Rumson, and surrounding New Jersey areas can improve their mood, achieve greater emotional balance, and enhance overall well-being

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