health
Blood Oxygen Saturation Improvement
Blood Oxygen Saturation Improvement refers to an increase in the oxygen saturation level measured in blood. It describes a change in this specific health outcome, rather than a general improvement in health or wellbeing.
See a focused overview of what the term Blood Oxygen Saturation Improvement refers to.
These are research findings, not promises. Most options have little evidence, and results differ from person to person.
What may help
What studies found for each option, best evidence first.
12 options:1 some evidence9 not enough evidence2 no benefit found
Cupping TherapypracticeSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 2 studies with a clear result found a benefit. Strongest study: a randomized controlled trial.
Open the Cupping Therapy pageMassagepracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit. Strongest study: a pooled analysis of several trials.
Open the Massage pageForest Bathing (Shinrin-yoku)practiceNot enough evidence
Too few or too small studies to know if it works.
2 of 4 studies found a benefit; 2 found none. Strongest study: a randomized controlled trial.
Open the Forest Bathing (Shinrin-yoku) pageCardiopracticeNot enough evidence
Too few or too small studies to know if it works.
1 of 2 studies found a benefit; 1 found none. Strongest study: a pooled analysis of several trials.
A pooled analysis of randomized trials reported a 1.56% increase in peripheral capillary oxygen saturation. A separate pooled analysis of randomized and non-randomized human studies found no significant difference versus placebo for aerobic exercise.
Open the Cardio pageHigh-Intensity Interval Training (HIIT)practiceNot enough evidence
Too few or too small studies to know if it works.
1 of 2 studies found a benefit; 1 found none. Strongest study: a randomized controlled trial.
In a 2024 trial of 38 people with conditions including diabetes type 2, obesity, or sleep apnea, SpO₂ improved in both the experimental and control groups after intervention.
Open the High-Intensity Interval Training (HIIT) pageBreathworkpracticeNot enough evidence
Too few or too small studies to know if it works.
3 of 4 studies found a benefit; 1 found none. Strongest study: a randomized controlled trial.
Open the Breathwork pageIce Bath / Cold PlungepracticeNot enough evidence
Too few or too small studies to know if it works.
1 of 2 studies found a benefit; 1 found none. Strongest study: a randomized controlled trial.
In a trial of 20 healthy participants, the proportion classified as desaturators in the cold-water immersion group fell from 30% to 0% between period1 and period2; in the no-immersion group, it changed from 50% to 90%.
Open the Ice Bath / Cold Plunge pageHatha YogapracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit. Strongest study: a randomized controlled trial.
In a randomized controlled trial involving 36 people with COPD, SpO2 increased within the Hatha Yoga group. The finding describes a change within that group, not a comparison with another group.
Open the Hatha Yoga page
The expert view shows every study, dose protocol and source.
What may help
Linked to improving it12 listedStart here
Most likely to help, from the evidence we have
- →PracticesCupping TherapyCertaintyMediumSourceClinical2 other sources
One randomized trial reported that SpO2 increased from 88.74±3.45 to 94.23±2.1 mmHg in the galbanum group. Another trial found higher SpO2 in the intervention group than in the control group at the first week (97.42% vs. 95.33%, p=0.023) and first month (98.0% vs. 95.33%, p=0.001).
Who was studied
- People with a condition
- Asthma
- Covid 19
Open Cupping TherapyStudy result
SpO2 increased from 88.74±3.45 to 94.23±2.1 mmHg (<0.001) in galbanum group with a significant difference between the groups (p<0.001)
Low probability(9)
- →PracticesMassageCertaintyLowSourceRCTLarge effect1 other source
A pooled analysis whose designs were not recorded found increased oxygen saturation (SMD = 2.00, 95% CI [1.17 to 2.83], P < 0.0001); 168 people were included in this outcome’s analysis.
How big is the effect
Large effectA big difference on average. Check how strong the evidence is.
Who was studied
- People with a condition
Open MassageStudy result
Massage therapy increased oxygen saturation (SMD = 2.00, 95% CI [1.17 to 2.83], P < 0.0001).
- →PracticesCardioCertaintyLowSourceRCTconflicting findings2 other sources
A pooled analysis of randomized trials reported a 1.56% increase in peripheral capillary oxygen saturation. A separate pooled analysis of randomized and non-randomized human studies found no significant difference versus placebo for aerobic exercise.
Who was studied
- People with a condition
- Copd
- Sleep Apnea
Open CardioStudy result
peripheral capillary oxygen saturation (WMD 1.56%)
- →PracticesForest Bathing (Shinrin-yoku)CertaintyLowSourceClinical4 other sources
In a randomized trial involving 120 people, average oxygen saturation after walking was 97.45%, 1.45% higher than in the urban environment (96.11 ± 0.13%). A separate randomized trial involving 30 people also reported higher oxygen saturation after forest bathing than before it or after a city walk.
Who was studied
- Healthy people and patients
- Copd
- Hypertension
Open Forest Bathing (Shinrin-yoku)Study result
The average peripheral oxygen saturation was 97.45% after the walking activities, which was 1.45% higher than that in the urban (CS) environment (96.11 ± 0.13%; Figure 6d).
- →PracticesHigh-Intensity Interval Training (HIIT)CertaintyLowSourceClinical2 other sources
In a 2024 trial of 38 people with conditions including diabetes type 2, obesity, or sleep apnea, SpO₂ improved in both the experimental and control groups after intervention.
Who was studied
- People with a condition
- Diabetes Type2
- Obesity
- Sleep Apnea
Open High-Intensity Interval Training (HIIT)Study result
significant improvements in ... SpO_2 (mean differences: 1.21% and 1.16%) ... were observed in both the experimental and control groups post-intervention (*p*<0.05).
- →PracticesBreathworkCertaintyLowSourceClinicalconflicting findings4 other sources
In a 2025 randomized trial of 32 people with coronary artery disease, blood oxygen saturation rose from 90.00±3.00 to 93.00±3.00 in the intervention group. Results differ across studies: a pooled analysis whose designs were not recorded found no between-group difference in oxygen saturation.
Who was studied
- People with a condition
- Coronary Artery Disease
Open BreathworkStudy result
Arterial oxygen saturation was significantly higher in the ACBT group after all four sessions (p < 0.001). Group × time interaction significant for oxygen saturation (p < 0.001).
- →PracticesIce Bath / Cold PlungeCertaintyLowSourceClinical2 other sources
In a trial of 20 healthy participants, the proportion classified as desaturators in the cold-water immersion group fell from 30% to 0% between period1 and period2; in the no-immersion group, it changed from 50% to 90%.
Who was studied
- Healthy people
Open Ice Bath / Cold PlungeStudy result
While in the CWI group, the percent of desaturators was decreased between «period1» and «period2» (30 vs. 0%), in the no-CWI group, percentages remained similar (50 vs. 90%).
- →PracticesHatha YogaCertaintyLowSourceClinical1 other source
In a randomized controlled trial involving 36 people with COPD, SpO2 increased within the Hatha Yoga group. The finding describes a change within that group, not a comparison with another group.
Who was studied
- People with a condition
- Copd
Open Hatha YogaStudy result
Within the HY group, f decreased and SpO2 increased.
- →PracticesGrounding / EarthingCertaintyLowSourceClinical1 other source
A 2023 cohort report described oxygen levels reaching 95% with oxygen supply and 77% without oxygen supply on the second day, after two sessions of 3 h daily earthing.
Who was studied
- People with a condition
- Covid 19
Open Grounding / EarthingStudy result
On the second day, after two sessions of 3 h daily earthing, his oxygen level raised to 95% with oxygen supply and 77% without oxygen supply.
- →PracticesBrisk WalkingCertaintyLowSourceClinical1 other source
A 2022 quasi-experimental study of 14 people with COPD found greater SpO2 in the intervention group (92 ± 6% versus 90 ± 7%; p = 0.002).
Who was studied
- People with a condition
- Copd
Open Brisk WalkingStudy result
greater SpO2 (92 ± 6% versus 90 ± 7%; p = 0.002)
Very low probability(2)
- →PracticesHeating Pads / Warm CompressesCertaintyVery lowSourceClinical1 other source
A 2024 trial found no significant differences among groups in SpO2 or pulse rates (n = 59; SpO2 F = 0.02, p = .981; pulse F = 0.78, p = .462); studies did not support an improvement.
Open Heating Pads / Warm CompressesWho was studied
- People with a condition
- →PracticesTabata TrainingCertaintyVery lowSourceClinical1 other source
Studies did not support an improvement in resting oxygen saturation: a 2025 randomized trial of 15 participants found no statistically significant effect (P=.485).
Open Tabata TrainingWho was studied
- People with a condition
Practices compared
Practices with at least one trial of their own for this goal. Ranked by how sure the evidence is, then effect size.| Practice | How sure | Effect size | Own trials | What worked in trials |
|---|---|---|---|---|
| Cupping Therapy | CertaintyMediumSourceClinical | 2 trials or pooled analyses | ||
| Massage | CertaintyLowSourceRCT | Large effect | 1 trial or pooled analysis | |
| Breathwork | CertaintyLowSourceClinical | 3 trials or pooled analyses | 10–15 min · 5–14×/week · 0.3–0.7 weeks | |
| Forest Bathing (Shinrin-yoku) | CertaintyLowSourceClinical | 2 trials or pooled analyses | 30–60 min · 0.3–0.4 weeks | |
| Brisk Walking | CertaintyLowSourceClinical | 1 trial or pooled analysis | ||
| Cardio | CertaintyLowSourceRCT | 1 trial or pooled analysis | ||
| Hatha Yoga | CertaintyLowSourceClinical | 1 trial or pooled analysis | ||
| High-Intensity Interval Training (HIIT) | CertaintyLowSourceClinical | 1 trial or pooled analysis | ||
| Ice Bath / Cold Plunge | CertaintyLowSourceClinical | 1 trial or pooled analysis |
What worked in trials: From the smallest to the typical amount in the trials that found this benefit. Not the most anyone did, not a target and not a limit.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Blood Oxygen Saturation Improvement refers to an increase in the oxygen saturation level measured in blood. It describes a change in this specific health outcome, rather than a general improvement in health or wellbeing. The outcome is distinct from claims about how a person feels, since a change in blood oxygen saturation and a noticeable symptom change are not necessarily the same thing.
How interventions help
Interventions studied for this outcome differ in both setting and timing. Some were examined as additions to standard treatment, while others were assessed during an acute emergency treatment or around anesthesia. The outcome was also measured in different ways: some studies reported oxygen saturation, whereas another reported the ΔPaO2/FiO2 ratio. These measures should not be treated as directly interchangeable.
Treatment periods ranged from an acute single emergency treatment to 8 weeks. Examples included Vitamin C at 50 mg/kg for 48 hours, L-Carnitine at 3000 mg/day for 5 days, and Glycine at 5 for 8 weeks. Other interventions were assessed after several days or about 2 weeks, while Lavender Extract was used for 5 min pre + during anesthesia. Where onset was specified, it was in days. Persistence after stopping has not been reported.
The findings therefore describe short-term changes under particular study conditions rather than a single consistent approach. Some comparisons reported higher oxygen-related measures with the intervention, while others found no meaningful difference between groups or reported improvement in both groups over time. The results are not broadly transferable: health status was usually not specified, Magnesium was studied in Asthma, and several entries are not marked as human evidence. These differences matter when interpreting whether an intervention is relevant to a particular person or clinical situation.
Choosing guidance
The options were studied over very different time frames, so they are not directly interchangeable. Some were examined in acute or short-use settings, while others involved several days, two weeks, or longer. Glycine was evaluated over the longest stated period, making it less relevant to questions about rapid change. Magnesium was studied as a single emergency treatment in Asthma, whereas Lavender Extract was assessed only around a procedure. These differences matter when considering whether an option is intended to be evaluated quickly or only after continued use.
Human evidence is identified for Vitamin C, Rhodiola Rosea, Glycine, and L-Carnitine. Human evidence was not identified for the other listed options, so findings for Astragalus, Spirulina, Curcumin, Magnesium, Melatonin, Echinacea, Ginger, and Lavender Extract require more caution when applying them to people. Magnesium is also specific to Asthma in the listed research and should not automatically be generalized to other situations.
The studied amounts vary substantially between options, from relatively small quantities to high daily amounts or study-specific protocols. This makes comparisons based only on the named ingredient unreliable. Vitamin C, Glycine, and Curcumin have effects categorized as appearing over days, while some other options were assessed in acute settings or without a stated onset category. No listed option has conflicting evidence in the available summaries, but several rely on limited types of evidence or do not include identified human evidence. The most relevant choice therefore depends on whether the reader values human research, a short evaluation period, or evidence from a particular clinical context.