Kualitas bukti 4.63/5
Skor tinjauan delapan dimensi terhadap rubrik kualitas . Setiap dimensi dinilai 1–5.
- D1 Dasar sumber
- 4/5
- D2 Otoritas sumber
- 5/5
- D3 Aritmetika
- 5/5
- D4 Ketidakpastian
- 4/5
- D5 Cakupan
- 5/5
- D6 Prosa
- 5/5
- D7 Kejujuran persepsi
- 4/5
- D8 Kelengkapan peringatan
- 5/5
Bagaimana risiko bervariasi
Angka utama merata-ratakan situasi yang sangat berbeda. Berikut bagaimana probabilitas bervariasi berdasarkan skenario atau konteks:
1 dari 1.000.000
No cohort has measured a respiratory-infection rate attributable to this scenario. Without an underlying viral exposure, cold feet on tile do not produce a cold. Point estimate is a structural "effectively zero" placeholder, not a measured rate.
1 dari 7,1 · 14%
Matches the Eccles 2005 arm: ~14% self-reported cold symptoms within 4–5 days after a 20-minute cold-foot immersion vs ~6% in controls. This is a symptom-conversion rate in an already-exposed population under a severe chilling protocol, not an infection rate from going sockless at home.
1 dari 20 · 5,0%
Very rough. Order of magnitude derived from WHO cold-housing guidance and UK excess-winter-mortality attribution (~21.5% of ~20,000–50,000 annual excess winter deaths → cold homes, concentrated in over-65s). The dominant pathways are cardiovascular and respiratory, not viral infection. Included as the subgroup the folk warning might actually apply to, even though it is almost never the one a grandmother has in mind when telling a child to put on slippers.
1 dari 2,0 · 50%
For someone with a cold-triggered vascular or cardiac condition, bare feet on cold tile reliably produces the trigger (Raynaud's episode, anginal chest pain) — but this is the underlying condition expressing itself, not a new illness. Included only to flag that "cold feet cause real symptoms" is true in this subgroup without rescuing the viral- infection folk model.
Panjang dan gradasi warna batang memeringkat skenario ini satu sama lain, bukan terhadap risiko lain. Peluang pastinya ditampilkan di samping masing-masing.
Kepercayaan populer bahwa berjalan-jalan di rumah yang hangat tanpa sandal, kaus kaki, atau sweter menyebabkan pilek secara mekanistik salah dalam bentuk yang biasa dinyatakan, dan sedikit benar dalam bentuk yang jauh lebih sempit daripada yang dimaksudkan oleh orang-orang yang menyampaikannya. Pilek disebabkan oleh virus (CDC menyebutkan jumlahnya lebih dari 200 virus pernapasan yang berbeda, dengan rhinovirus sebagai yang paling umum), dan ditularkan melalui tetesan dan kontak, bukan oleh suhu. Tanpa paparan virus yang mendasari, kaki telanjang di ubin hanya menghasilkan kaki dingin dan tidak ada yang lain. Bagian dari model populer yang bertahan setelah bersentuhan dengan bukti lebih sempit: Johnson dan Eccles (Cardiff, 2005) menunjukkan dalam uji coba acak 180 orang bahwa perendaman kaki dingin selama 20 menit meningkatkan gejala pilek yang dilaporkan sendiri selama 4–5 hari berikutnya dari 6% menjadi 14%, dan Foxman et al. (PNAS, 2015) menunjukkan bahwa rhinovirus bereplikasi lebih baik dan respons interferon bawaan lebih lemah pada suhu 33–35 °C yang lebih dingin di rongga hidung daripada pada 37 °C. Kedua hasil tersebut bersama-sama mendukung satu klaim spesifik: pendinginan dapat mengubah pembawa virus subklinis menjadi pilek simtomatik. Mereka tidak mendukung klaim bahwa paparan dingin menghasilkan penyakit dari ketiadaan.
Yang menarik dari ketakutan khusus ini adalah kesenjangan antara skenario yang disebutkannya dan skenario di mana dingin di rumah benar-benar membunuh orang. Peringatan populer biasanya disampaikan kepada anak atau orang dewasa yang sehat di rumah yang hangat (pakai sandal, jangan duduk di ubin dingin, jangan berjalan-jalan dengan rambut basah), di mana efek modulasi Eccles adalah batas atas dari apa yang diizinkan oleh bukti dan tidak ada kohort yang mencoba mengukur tingkat infeksi per musim dingin yang dapat diatribusikan padanya. Skenario di mana dingin di dalam ruangan secara jelas mematikan hampir merupakan demografi yang berlawanan: penghuni lansia yang rapuh di rumah yang suhunya dipertahankan di bawah 16–18 °C, di mana WHO’s 2018 Housing and Health Guidelines dan data mortalitas-musim-dingin-berlebih UK ONS mengidentifikasi sekitar 21.5% dari 20.000–50.000 kematian musim dingin berlebih tahunan sebagai akibat dari perumahan dingin, dengan penyakit peredaran darah dan pernapasan sebagai penyebab dominan. Kerugian itu adalah tentang suhu ruangan ambien dan stres vaskular, bukan tentang lupa kaus kaki.
Di mana kerangka “dapat diabaikan” tidak berlaku: siapa pun dengan fenomena Raynaud akan secara pasti memicu episode dari ubin dingin terlepas dari infeksi, dan angina yang diinduksi dingin adalah peristiwa jantung nyata bagi yang rentan. Pembaca yang mengalami imunosupresi yang membawa virus pernapasan mungkin lebih dekat ke angka 14% Eccles daripada ke baseline populasi umum, meskipun penelitian tersebut tidak dirancang untuk menyatakan demikian. Subkelompok spesifik yang seharusnya menjadi sasaran peringatan populer agar sesuai dengan data mortalitas rumah dingin (lansia rapuh dan bayi di perumahan yang kurang hangat, terutama dengan penyakit kardiorespirasi yang sudah ada) biasanya bukan subkelompok yang benar-benar menerima peringatan tersebut. Saran tentang sandal sebagian besar adalah insting budaya yang benar yang diarahkan pada paparan yang salah.
Fakta terkait
Berjalan di hujan tidak memberi flu. Duduk di permukaan dingin tidak menyebabkan infeksi kandung kemih. Berpakaian tipis di rumah tidak membuat sakit. Virus menyebabkan infeksi. Suhu tidak.
Buku besar klaim
Setiap angka di bawah ini adalah apa yang dilaporkan masing-masing sumber, dengan kutipan kata demi kata yang kami andalkan dan bagaimana kami sampai pada angka kami. Klik tautan mana saja untuk memverifikasi langsung.
2/5 sumber diverifikasi secara independen kata demi kata terhadap sumber terkutip
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[1] Family Practice (Oxford Academic), via PubMed — Acute cooling of the feet and the onset of common cold symptoms
Acute cooling of the feet and the onset of common cold symptomsSee all 3 Likelier entries citing this source →
- Statistik
13/90 chilled subjects vs 5/90 controls self-reported cold symptoms in the 4–5 days after a 20-minute cold-foot immersion (P=0.047)- Kutipan
“"There is a common folklore that chilling of the body surface causes the development of common cold symptoms, but previous clinical research has failed to demonstrate any effect of cold exposure on susceptibility to infection with common cold viruses. [...] 13/90 subjects who were chilled reported they were suffering from a cold in the 4/5 days after the procedure compared to 5/90 control subjects (P=0.047). [...] Acute chilling of the feet causes the onset of common cold symptoms in around 10% of subjects who are chilled. Further studies are needed to determine the relationship of symptom generation to any respiratory infection." ”
- Data sumber dari
- 2005-12-01
- Diakses
- 2026-04-16 · salinan arsip
- Perhitungan
- This is the canonical trial behind any "cold feet causes colds" claim. Critical qualifier the authors themselves flag: the study measured self-reported symptoms, not laboratory-confirmed new infections. The plausible mechanism the authors propose is that reflex vasoconstriction in the upper airway on cold- foot exposure reduces mucosal blood flow and temporarily lowers local defences — converting a pre-existing subclinical carriage of rhinovirus or another respiratory virus into a symptomatic cold. That is a modulation effect, not a causation effect. Without an underlying viral exposure, cooling the feet is not expected to produce illness from nothing. 90 subjects per arm gives an absolute difference of 8 percentage points (14% vs 6%); the confidence bound is wide, and no replication of comparable rigour exists at the scale needed to attach a per-winter probability to "no slippers at home."
- Independensi
- Independent single-centre RCT at Cardiff (Common Cold Centre); editorially independent of the CDC and WHO sources. The Foxman 2015 mechanistic paper below provides a biological model compatible with Eccles' clinical result but was conducted in a separate lab with different methodology (mouse airway cells, not human subjects).
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[2] Proceedings of the National Academy of Sciences (PNAS), via PubMed — Temperature-dependent innate defense against the common cold virus limits viral replication at warm temperature in mouse airway cells Terverifikasi
Temperature-dependent innate defense against the common cold virus limits viral replication at warm temperature in mouse airway cellsSee all 2 Likelier entries citing this source →
- Statistik
Rhinovirus replicates more robustly at 33–35 °C (nasal cavity) than at 37 °C (core body), with weaker interferon/antiviral response at the cooler temperature- Kutipan
“"Most isolates of human rhinovirus, the common cold virus, replicate more robustly at the cool temperatures found in the nasal cavity (33–35 °C) than at core body temperature (37 °C). [...] These findings demonstrate that in mouse airway cells, rhinovirus replicates preferentially at nasal cavity temperature due, in part, to a less efficient antiviral defense response of infected cells at cool temperature." ”
- Data sumber dari
- 2015-01-20
- Diakses
- 2026-04-16 · salinan arsip
- Verifikasi
- Kutipan diambil ulang secara independen dan dikonfirmasi kata demi kata terhadap sumber terkutip selama audit pendasaran kami.
- Perhitungan
- Foxman et al. supplies the cleanest known mechanism for any cold-exposure- to-cold-illness signal: rhinovirus itself replicates better in a cooler nose, and the innate interferon response is weaker at 33 °C than at 37 °C. This makes Eccles' symptom-onset result biologically plausible without rescuing the folk model. The study is mouse airway cells in vitro, not an epidemiological measurement, and no study has translated the temperature- dependent replication curve into a per-exposure infection probability for a human wearing socks versus going barefoot. The mechanism is real; the epidemiological effect size at normal indoor conditions is not quantified.
- Independensi
- Yale laboratory study with no authorship, funding, or institutional overlap with the Cardiff Eccles group; treat as methodologically independent mechanistic corroboration. Independent of the CDC and WHO sources.
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[3] US Centers for Disease Control and Prevention — About the Common Cold
About the Common ColdSee all 2 Likelier entries citing this source →
- Statistik
More than 200 respiratory viruses cause colds; rhinoviruses are the most frequent cause; primary spread is droplets and contact- Kutipan
“"More than 200 respiratory viruses can cause colds. Rhinoviruses are the most frequent cause of colds in the United States. [...] Most respiratory viruses are spread through droplets that an infected person releases when they cough or sneeze. These droplets can enter your body if you breathe them in or touch a contaminated surface and then touch your eyes, nose, or mouth." ”
- Data sumber dari
- 2026-02-19
- Diakses
- 2026-04-16 · salinan arsip
- Perhitungan
- CDC's current patient-facing page is the plain-language anchor for the "colds are viral, not thermal" frame. The folk model treats cold exposure as causative; CDC treats virus exposure as causative and does not list chilling or being under-dressed indoors as a transmission route at all. The Eccles and Foxman results sit downstream of this: you still need the virus. Without rhinovirus or one of the other ~200 candidates in your airway, cold feet on tile do not produce a cold.
- Independensi
- Institutional CDC public-health guidance; editorially independent of the Eccles clinical trial and Foxman mechanistic paper, though it aligns with both.
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[4] World Health Organization (via NCBI Bookshelf) — Low indoor temperatures and insulation — WHO Housing and Health Guidelines Terverifikasi
Low indoor temperatures and insulation — WHO Housing and Health Guidelines- Statistik
WHO recommends minimum indoor temperature of 18 °C to protect general populations; higher minimum for vulnerable groups (older people, children, chronic cardiorespiratory illness)- Kutipan
“"For countries with temperate or colder climates, 18 °C has been proposed as a safe and well-balanced indoor temperature to protect the health of general populations during cold seasons. [...] A higher minimum indoor temperature than 18 °C may be necessary for vulnerable groups including older people, children and those with chronic illnesses, particularly cardiorespiratory disease." ”
- Data sumber dari
- 2018-11-27
- Diakses
- 2026-04-16 · salinan arsip
- Verifikasi
- Kutipan diambil ulang secara independen dan dikonfirmasi kata demi kata terhadap sumber terkutip selama audit pendasaran kami.
- Perhitungan
- WHO's guideline is the authoritative carve-out for the one scenario in which "being under-dressed at home" really does kill people: under-heated housing in cold climates, especially for the elderly and those with cardiorespiratory disease. The exposure here is the ambient indoor temperature (below ~18 °C sustained), not a barefoot afternoon in a heated 21 °C living room. The outcome is cardiovascular and respiratory morbidity and mortality, not the common cold. This is the reason the headline framing ("folk belief overrated") must be paired with an explicit vulnerable-group caveat rather than a blanket dismissal.
- Independensi
- WHO expert consensus guideline synthesising the cold-housing evidence base. Editorially independent of the Eccles, Foxman, and CDC sources and addresses a distinct exposure-outcome pair (sustained low ambient temperature → cardiovascular/respiratory death), not symptom onset of the common cold.
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[5] UK Parliamentary Office of Science and Technology — Winter mortality (POSTnote 752)
Winter mortality (POSTnote 752)- Statistik
Excess winter deaths in England and Wales ranged ~20,000–50,000/year 2000–2019; ~21.5% of excess winter deaths attributable to cold homes; most deaths from circulatory or respiratory disease among the elderly- Kutipan
“"Between 2000 and 2019, excess winter deaths ranged from 20,000 to 50,000 a year [...] Most excess winter deaths are due to circulatory or respiratory diseases and the majority occur amongst the elderly population. [...] It has been estimated that 10% of excess winter deaths are attributable to fuel poverty and 21.5% to cold homes." ”
- Data sumber dari
- 2024-01-01
- Diakses
- 2026-04-16 · salinan arsip
- Perhitungan
- This is the population-scale number for the one real cold-in-the-home harm: under-heated housing kills elderly people through cardiovascular and respiratory pathways, not through infection. It does not apply to the folk-belief scenario (healthy adult, barefoot in a warm house) and should not be aggregated with the Eccles symptom-onset figure. Used here only to bound the vulnerable-group subgroup in the regional breakdown and to keep the caveats honest about who the folk warning, repurposed, actually applies to.
- Independensi
- UK Parliament research briefing drawing on ONS winter-mortality data and NICE fuel-poverty reviews. Editorially independent of the WHO guideline (though it references the same underlying epidemiology) and independent of the Eccles, Foxman, and CDC sources.