Why we need our “vitamin sea”: Diving into the health benefits of the big blue

20 augustus 2025

(Global Heart) There’s a reason we crave the coast. It’s not just about the scenic views; spending time by the sea has a powerful effect on your well-being.

Feel-good vibes: Why the coast calls us

Seriously, there’s just something about the ocean that makes everything better. It’s not just a pretty view; it really does wonders on us!

Health benefits of the sea

Chillin’ out with wave sounds

Ever just sat there, listening to the waves crash? It’s super relaxing, right? That steady whoosh-and-swell is like nature’s chill-out music. It helps quiet all the chatter in your head, pushing out noisy thoughts and letting you just be. It’s like a mini-meditation session, totally free!

Listening to waves relaxes the brain

The rhythmic sound of ocean waves is often described as “white noise” or “pink noise.” This consistent, gentle, and non-threatening auditory input can:

Mask other disruptive sounds: Allowing the brain to focus on a calming, predictable pattern rather than jarring noises.
Promote a meditative state: The repetitive nature can help quiet a busy mind, leading to a state of relaxation similar to meditation.
Trigger the parasympathetic nervous system: This is the “rest and digest” system, which lowers heart rate, reduces blood pressure, and promotes a sense of calm.

Ocean minerals: A body boost

Seawater is rich in a variety of minerals, including magnesium, potassium, calcium, sodium, and iodine. While direct absorption of these minerals through the skin is a subject of ongoing research, some benefits are recognized:

Magnesium absorption: Some studies suggest that magnesium, crucial for muscle and nerve function, can be absorbed transdermally, potentially aiding in relaxation and reducing muscle soreness.
Skin health: The minerals can have a beneficial effect on skin conditions like eczema and psoriasis, helping to reduce inflammation and promote healing.
Detoxification: The osmotic effect of saltwater may help draw out toxins from the body.

Cold dips for a happy head

Jumping into chilly ocean water might sound nuts, but it’s actually amazing for your mental game. That initial shock? It kicks off a rush of feel-good chemicals in your brain, like dopamine—instant mood lift! Regular cold plunges can also help you get tougher mentally and handle stress way better. It’s like training your brain to be a superhero.

Cold water swimming can help reduce stress and enhance resilience. These are the benefits:

Dopamine release: Exposure to cold water triggers a release of endorphins and dopamine, leading to a natural “high” and improved mood.
Stress response modulation: Regular exposure to cold stress can train the body to better manage all types of stress, enhancing resilience over time.
Reduced inflammation: Cold water immersion is known to reduce inflammation in the body, which can have positive effects on mood and physical well-being.
Improved circulation: The body’s response to cold water can improve blood flow and circulation.
Enhanced mental toughness: Deliberately putting oneself in an uncomfortable (but safe) situation like cold water swimming can build mental fortitude and a sense of accomplishment.

Beach vibes = Happy hormones

Just being near the ocean, whether you’re dipping your toes or just breathing it all in, can make you feel incredibly happy. The vastness of it, the fresh air, the sunlight—it all works together to boost your “happy hormones” and lower those pesky stress ones. It’s pure bliss.

Being by (and in) the sea raises happy hormones

Serotonin and dopamine: The visual beauty, the fresh air, the physical activity (if swimming or walking), and the overall sense of peace can all contribute to the release of these neurotransmitters associated with happiness and well-being.
Reduced cortisol: Conversely, time in nature, especially by the sea, is known to lower levels of cortisol, the primary stress hormone.
Sense of awe: The vastness and power of the ocean can induce a sense of awe, which has been linked to increased feelings of well-being and a broader perspective.

Sleep like a baby with sea air

Ever notice how you sleep super soundly after a day by the sea? Part of it might be that crisp, clean sea air. It’s often got these cool things called “negative ions“ which some folks say can really help you relax and nod off easier. Bonus: Sea air tends to be cleaner, with less dust and pollen than city smog, which can help you breathe freely and catch some quality Zs.

Breathing sea air can help you sleep.

Negative ions: Sea air is typically rich in negative ions, which are oxygen atoms with an extra electron. While the science is still developing, some theories suggest that negative ions can promote relaxation and improve mood, potentially leading to better sleep.
Pollen and pollutant reduction: Coastal areas often have lower concentrations of pollen and other airborne pollutants, which can be beneficial for those with allergies or respiratory issues, leading to clearer breathing and more restful sleep.
Magnesium and trace minerals: Tiny particles of sea salt and minerals from the ocean can become airborne. Inhaling these might offer some subtle benefits, though the primary effect is likely due to the cleaner, refreshing air itself and the overall calming environment.