Cold Showers vs Vitamin D for immunity
Short answer: For immunity, users rate them about the same: 100% report improvement with Cold Showers (7 reports) and 99% with Vitamin D (74 reports).
Vitamin D has 3,251 meta-analyses and 4,560 randomized trials on PubMed; the other has not been graded.
Based on 103 reports about Cold Showers and 2,323 about Vitamin D. Not medical advice.
| Cold Showers Lifestyle | Vitamin D Supplement | |
|---|---|---|
| User score | 40 | 48 |
| Verdict | Mostly positive | Mostly positive |
| Positive of reports that state an outcome | 83% | 65% |
| Reports | 103 | 2,323 |
| Research | Research pending | AResearch: Strong |
| Meta-analyses / RCTs | — | 3,251 / 4,560 |
| Mainly used for | ||
| Weight loss % reporting improvement | 100% (2) | 62% (8) |
| Appetite % reporting improvement | — | 67% (3) |
| Focus % reporting improvement | 100% (6) | 82% (55) |
| Energy % reporting improvement | 100% (10) | 87% (215) |
| Sleep % reporting improvement | 100% (4) | 50% (105) |
| Anxiety % reporting improvement | 100% (6) | 65% (82) |
| Mood % reporting improvement | 100% (13) | 88% (308) |
| Memory % reporting improvement | — | 83% (12) |
| Performance % reporting improvement | — | 100% (23) |
| Recovery % reporting improvement | — | 91% (11) |
| Pain & inflammation % reporting improvement | — | 73% (30) |
| Digestion % reporting improvement | — | 50% (14) |
| Libido % reporting improvement | — | 80% (45) |
| Hormones % reporting improvement | — | 87% (55) |
| Blood sugar % reporting improvement | — | 100% (2) |
| Heart & lipids % reporting improvement | 100% (2) | 60% (15) |
| Skin & hair % reporting improvement | 100% (4) | 89% (28) |
| Immunity % reporting improvement | 100% (7) | 99% (74) |
| Longevity % reporting improvement | — | 78% (9) |
| Common side effects | depression, discomfort | insomnia, anxiety, fatigue, hypercalcemia |
| Typical dose reported | nightly and morning | daily |
“I take a cold shower for as cold as I can get it every night before bed. I sleep like a baby.”
These results indicate that the prevalence of vitamin D deficiency was more elevated in obese subjects. The vitamin D deficiency was associated with obesity irrespective of age, latitude, cut-offs to define vitamin D deficiency and the Human Development Index of the study location.
Obes Rev, 2015 ↗“First thing I noticed was my mood & libido, I have more 'feeling/sensitivity' down there.”
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Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate