Depression affects millions of people, and treatment doesn’t always come easy – sometimes the standard route of medication and talk therapy leaves patients still searching for relief. That’s why more people across the city are turning their attention to HBOT in Kolkata as a complementary path forward.
Hyperbaric Oxygen Therapy (HBOT) involves breathing pure oxygen inside a pressurised chamber, and while it’s long been used for wound healing and decompression sickness, researchers are now exploring what it can do for mental health – depression in particular.
Emerging studies suggest HBOT may improve oxygen delivery to the brain, ease inflammation, and support nerve signalling, all of which could play a role in lifting mood. Here’s what HBOT Kolkata specialists want you to know about this evolving treatment.
Recognising the Symptoms of Depression
Depression can range from mild to severe, and its symptoms often include:
- Persistent sadness or a low mood
- Losing interest in activities once enjoyed
- Noticeable changes in appetite or weight, unrelated to dieting
- Sleep disturbances – too little or too much
- Ongoing fatigue or low energy
- Restlessness or purposeless movement
- Feelings of worthlessness or guilt
- Anxiety, unease, or persistent worry
- Slowed speech, posture, or physical movement
- Rumination over past mistakes or self-blame
- Difficulty concentrating, remembering, or making decisions
- Recurring thoughts of death or suicide
- Unexplained physical complaints like headaches or back pain
- What’s Happening Inside the Brain
The exact biological root of major depressive disorder is still being studied, but researchers generally point to a complex interplay between neurotransmitter levels, receptor activity, and brain chemistry.
A disruption in serotonin (5-HT) signalling within the central nervous system is considered a key factor, alongside other neurotransmitters like norepinephrine, dopamine, glutamate, and brain-derived neurotrophic factor (BDNF). The fact that SSRIs (selective serotonin reuptake inhibitors) are effective for many patients supports the theory that serotonin activity plays a central role — though receptor sensitivity, cell signalling, and gene expression are also thought to matter over time.
Seasonal Affective Disorder (SAD), a depressive condition tied to the fall and winter months, is believed to follow a similar serotonin-related pathway, likely influenced by shifts in circadian rhythm and reduced sunlight exposure.
Types of Depression
1. Bipolar Disorder Marked by alternating episodes of depression and mania (or hypomania) – periods of unusually elevated mood or energy.
2. Major Depressive Disorder Characterised by intense symptoms that disrupt daily functioning – sleep, appetite, work, and the ability to enjoy life. It can occur once or recur throughout a person’s life, at any age.
3. Persistent Depressive Disorder A longer – Lasting form where depressive symptoms persist for two years or more, sometimes alongside major depressive episodes.
Other Forms Psychotic depression, seasonal affective disorder, and postpartum depression each present under distinct circumstances. Postpartum depression, for instance, affects women after childbirth and can bring anxiety, disinterest in caring for the baby, and feelings of helplessness or inadequacy.
Common Treatment Approaches:
- Selective Serotonin Reuptake Inhibitors (SSRIs)
- Other antidepressant medications
- Serotonin-Dopamine Activity Modulators
- Tricyclic antidepressants
- Monoamine oxidase inhibitors
- Hyperbaric Oxygen Therapy in Depression: What the Research Shows
Hyperbaric Oxygen Therapy in depression care works by delivering pure oxygen at increased atmospheric pressure – typically 2 to 3 ATA – to raise oxygen levels in the blood and tissues, a state known as hyperoxia. Per Undersea and Hyperbaric Medical Society (UHMS) guidelines, this pressure must be at least 1.4 ATA, and most approved protocols call for a minimum of 2 ATA. The therapy requires a sealed chamber – rigid or flexible – capable of delivering 100% oxygen, with trained specialists monitoring the patient throughout a structured treatment plan.
How HBOT May Support Brain Health?
Beyond depression, HBOT is associated with a range of reported benefits: sharper mental clarity, reduced inflammation, faster recovery from athletic strain, and anti-ageing effects. Many patients describe feeling more focused after sessions. The theory is that elevated oxygen levels stimulate brain activity, influencing neurotransmitter function and stem cell activity – which may, in turn, help regulate brainwave patterns and the brain’s chemical balance.
One study looked at combining HBOT with escitalopram (an SSRI commonly prescribed for depression and generalised anxiety) and found improved cognitive function in patients after four to six weeks of combined treatment.
Another study examined patients with incomplete spinal cord injury who also experienced depression and anxiety. After eight weeks of HBOT, researchers observed improved nerve function and daily functioning, with mood-related symptoms improving to a degree comparable with psychotherapy.
Gut Health and HBOT: An Emerging Angle?
Some research has also looked at the gut-brain connection. In one study, researchers found a notable link between certain gut metabolites and cyanobacteria levels, with mice receiving HBOT (administered via a pressurised chamber cleared with pure oxygen) over a 21-day course showing reduced depressive-like behaviour compared to untreated control groups – suggesting HBOT’s effects may extend to modifying gut metabolite activity linked to mood regulation.
Separately, a case study of 39 patients with mild traumatic brain injury underwent a 40-session HBOT course (two sessions a day, five days a week, over 20 days, at 1.5 ATA) and reported improvement in brain-injury-related symptoms.
Preliminary animal research has also explored HBOT as a possible supportive therapy for Parkinson’s disease, given its progressive loss of dopamine-producing neurons. Early findings suggest HBOT may support mitochondrial function, reduce cell death signalling, and ease inflammation in the midbrain – though this remains at an early research stage and isn’t an established clinical treatment for Parkinson’s.
Considering HBOT in Kolkata?
While research into Hyperbaric Oxygen Therapy in depression treatment is still developing, the early findings are encouraging enough that many patients are exploring it as a complementary option alongside conventional care.
If you’re based in Kolkata and curious whether HBOT Kolkata clinics could be a fit for your mental health journey, it’s worth having a conversation with a qualified specialist who can walk you through what to expect, the science so far, and how it might complement your existing treatment plan. As research continues to evolve, staying informed – and working with experienced HBOT in Kolkata providers – is the best way to make a decision that’s right for you.
This content is for informational purposes only and does not constitute medical advice. Please consult a qualified healthcare professional before starting any new treatment.
