That is annoying, but I think I must be in the minority in that I enjoy daylight savings time changes. I like that in the summer it's light til 9:30pm, and I like that in the winter it gets dark by 4:30pm. The variety makes for a more interesting circannual cycle.
October 25, 2026 at 12:21 PM
That is annoying, but I think I must be in the minority in that I enjoy daylight savings time changes. I like that in the summer it's light til 9:30pm, and I like that in the winter it gets dark by 4:30pm. The variety makes for a more interesting circannual cycle.
Absolutely true. It's bizarre to me how a subset of critics, reporters, and journalists, as if responding to some circannual rhythm, cease to maximize movies as art and instead behave as if they're talking about cattle or something.
September 21, 2026 at 4:38 AM
Absolutely true. It's bizarre to me how a subset of critics, reporters, and journalists, as if responding to some circannual rhythm, cease to maximize movies as art and instead behave as if they're talking about cattle or something.
#ETUDESANTEDUSOIR
L’exposition au soleil estival ne suffit pas à compenser le déficit en #vitamineD chez plus de la moitié des plus de 65 ans qui demeurent sous-carencés toute l'année
Par @newcastleuni.bsky.social
buff.ly/qrJTJLR
L’exposition au soleil estival ne suffit pas à compenser le déficit en #vitamineD chez plus de la moitié des plus de 65 ans qui demeurent sous-carencés toute l'année
Par @newcastleuni.bsky.social
buff.ly/qrJTJLR
Circannual prevalence of vitamin D insufficiency in older and minoritized ethnic adults in Northern Britain: screening outcomes from a clinical trial - European Journal of Clinical Nutrition
European Journal of Clinical Nutrition - Circannual prevalence of vitamin D insufficiency in older and minoritized ethnic adults in Northern Britain: screening outcomes from a clinical trial
www.nature.com
September 11, 2026 at 4:02 PM
#ETUDESANTEDUSOIR
L’exposition au soleil estival ne suffit pas à compenser le déficit en #vitamineD chez plus de la moitié des plus de 65 ans qui demeurent sous-carencés toute l'année
Par @newcastleuni.bsky.social
buff.ly/qrJTJLR
L’exposition au soleil estival ne suffit pas à compenser le déficit en #vitamineD chez plus de la moitié des plus de 65 ans qui demeurent sous-carencés toute l'année
Par @newcastleuni.bsky.social
buff.ly/qrJTJLR
🌞🌜Circadian and circannual rhythms act as silent determinants of cancer prognosis, influencing interaction between host’s immune system and tumour behaviour.
Beyond the calendar: A narrative review on chronobiological drivers of prognosis in resectable NSCLC
journals.sagepub.com/share/RBRQST...
Beyond the calendar: A narrative review on chronobiological drivers of prognosis in resectable NSCLC
journals.sagepub.com/share/RBRQST...
August 31, 2026 at 1:20 PM
🌞🌜Circadian and circannual rhythms act as silent determinants of cancer prognosis, influencing interaction between host’s immune system and tumour behaviour.
Beyond the calendar: A narrative review on chronobiological drivers of prognosis in resectable NSCLC
journals.sagepub.com/share/RBRQST...
Beyond the calendar: A narrative review on chronobiological drivers of prognosis in resectable NSCLC
journals.sagepub.com/share/RBRQST...
This population-based cross-sectional study aimed to investigate the prevalence and impact of body pain in migraine and tension-type headache (TTH).
METHODS: We analyzed baseline data from 2,548 participants in the Korean population-based Circannual Change in Headache and Sleep (🧵 2/9)
METHODS: We analyzed baseline data from 2,548 participants in the Korean population-based Circannual Change in Headache and Sleep (🧵 2/9)
March 20, 2026 at 11:21 AM
This population-based cross-sectional study aimed to investigate the prevalence and impact of body pain in migraine and tension-type headache (TTH).
METHODS: We analyzed baseline data from 2,548 participants in the Korean population-based Circannual Change in Headache and Sleep (🧵 2/9)
METHODS: We analyzed baseline data from 2,548 participants in the Korean population-based Circannual Change in Headache and Sleep (🧵 2/9)
Circannual Rhythms Affect the Bioavailability of Phenolic Compounds from Grape Seed Proanthocyanidins Extract Differently in Healthy and Obese Fischer 344 Rats #JAFC #MassSpec pubs.acs.org/doi/10.1021/...
Circannual Rhythms Affect the Bioavailability of Phenolic Compounds from Grape Seed Proanthocyanidins Extract Differently in Healthy and Obese Fischer 344 Rats
(Poly)phenols are plant-derived bioactive molecules that are associated with several health benefits. Therefore, it is essential to study the factors that affect the bioavailability of these phenolic compounds. Recently, circannual rhythms have been identified as one of the factors that may affect the bioavailability of these compounds. Hence, this study evaluates the impact of circannual rhythms on grape seed proanthocyanidins extract (GSPE) bioavailability in healthy and obesogenic contexts. Male Fischer 344 rats, fed standard (ST) or cafeteria (CAF) diets, were housed under different photoperiod conditions (6, 12, or 18 h of light per day) during 9 weeks and an oral dose of GSPE (25 mg/kg) was daily administered for the last 4 weeks. Serum GSPE-derived metabolites were then quantified by HPLC-ESI-MS/MS. A higher bioavailability was observed in rats exposed to a 12 h photoperiod and fed ST diet. However, this pattern was altered in CAF-fed rats, suggesting an attenuated influence of photoperiod under obesogenic conditions. These findings contribute to a better understanding of the complex relationships between diet, photoperiod, and serum metabolites.
pubs.acs.org
September 26, 2025 at 7:54 PM
Circannual Rhythms Affect the Bioavailability of Phenolic Compounds from Grape Seed Proanthocyanidins Extract Differently in Healthy and Obese Fischer 344 Rats #JAFC #MassSpec pubs.acs.org/doi/10.1021/...
soz, forgot paper link: royalsocietypublishing.org/rspb/article...
The structure of the annual migratory flight activity in a songbird
Abstract. Migratory songbirds have an internal circannual genetic programme that controls the timing and extent of migratory flight activity, as demonstrat
royalsocietypublishing.org
July 9, 2026 at 8:55 AM
soz, forgot paper link: royalsocietypublishing.org/rspb/article...
(Young) chronobiologists, save the date! 📅⏰🌗
Great topic, great organisers, great place!
#chronobiology #circadian #circatidal #circalunar #circannual
@juleneumann.bsky.social
@nils-reinhard.bsky.social
@lhueppe.bsky.social
@bioclocksuk.bsky.social
@aberdlsagb.bsky.social
Great topic, great organisers, great place!
#chronobiology #circadian #circatidal #circalunar #circannual
@juleneumann.bsky.social
@nils-reinhard.bsky.social
@lhueppe.bsky.social
@bioclocksuk.bsky.social
@aberdlsagb.bsky.social
The Meeting of Young Chronobiologists is an international, early-career initiative that connects researchers across all topics of chronobiology. It is dedicated to early career researchers and aims to promote an open and interactive atmosphere, creating a networking space for the next generation.
May 11, 2026 at 8:58 AM
(Young) chronobiologists, save the date! 📅⏰🌗
Great topic, great organisers, great place!
#chronobiology #circadian #circatidal #circalunar #circannual
@juleneumann.bsky.social
@nils-reinhard.bsky.social
@lhueppe.bsky.social
@bioclocksuk.bsky.social
@aberdlsagb.bsky.social
Great topic, great organisers, great place!
#chronobiology #circadian #circatidal #circalunar #circannual
@juleneumann.bsky.social
@nils-reinhard.bsky.social
@lhueppe.bsky.social
@bioclocksuk.bsky.social
@aberdlsagb.bsky.social
One week to go until #EBRS2025 in #Lübeck!
We are very much looking forward to exciting #chronobiology!
#circatidal #circadian #circalunar #circannual
Sessions on:
-> #Evolution
-> Short and long #clocks
-> Clocks in the #wild
-> #Seasonality
... and many more:
ebrs-online.org/index.php/ev...
We are very much looking forward to exciting #chronobiology!
#circatidal #circadian #circalunar #circannual
Sessions on:
-> #Evolution
-> Short and long #clocks
-> Clocks in the #wild
-> #Seasonality
... and many more:
ebrs-online.org/index.php/ev...
August 18, 2025 at 6:19 AM
One week to go until #EBRS2025 in #Lübeck!
We are very much looking forward to exciting #chronobiology!
#circatidal #circadian #circalunar #circannual
Sessions on:
-> #Evolution
-> Short and long #clocks
-> Clocks in the #wild
-> #Seasonality
... and many more:
ebrs-online.org/index.php/ev...
We are very much looking forward to exciting #chronobiology!
#circatidal #circadian #circalunar #circannual
Sessions on:
-> #Evolution
-> Short and long #clocks
-> Clocks in the #wild
-> #Seasonality
... and many more:
ebrs-online.org/index.php/ev...
Not to mention that the fact that we evolved on this planet with its year and have the circannual cycle built into the very way we function. It's far from arbitrary. The point at which we mark it may be but so what?
January 1, 2025 at 12:16 PM
Not to mention that the fact that we evolved on this planet with its year and have the circannual cycle built into the very way we function. It's far from arbitrary. The point at which we mark it may be but so what?
Models toward understanding torpor–arousal cycles during hibernation
Author: Gen Kurosawa
Read the #OpenAccess paper now: https://ow.ly/4U7O50XtJta
Author: Gen Kurosawa
Read the #OpenAccess paper now: https://ow.ly/4U7O50XtJta
November 20, 2025 at 6:01 PM
Models toward understanding torpor–arousal cycles during hibernation
Author: Gen Kurosawa
Read the #OpenAccess paper now: https://ow.ly/4U7O50XtJta
Author: Gen Kurosawa
Read the #OpenAccess paper now: https://ow.ly/4U7O50XtJta
배경: 신체 통증은 삶의 질에 상당한 영향을 미친다. 그러나 두통과 신체 전반의 통증 사이의 관계는 여전히 명확하지 않다. 본 인구 기반 단면 연구는 편두통 및 긴장형 두통(TTH) 환자에서 신체 통증의 유병률과 영향을 조사하는 것을 목적으로 하였다.
방법: 한국 인구 기반 ‘두통 및 수면의 연중 변화(Circannual Change in Headache and Sleep)’ 연구에 참여한 2,548명의 기저 데이터를 분석하였다. (🧵 1/4)
방법: 한국 인구 기반 ‘두통 및 수면의 연중 변화(Circannual Change in Headache and Sleep)’ 연구에 참여한 2,548명의 기저 데이터를 분석하였다. (🧵 1/4)
March 20, 2026 at 11:12 AM
배경: 신체 통증은 삶의 질에 상당한 영향을 미친다. 그러나 두통과 신체 전반의 통증 사이의 관계는 여전히 명확하지 않다. 본 인구 기반 단면 연구는 편두통 및 긴장형 두통(TTH) 환자에서 신체 통증의 유병률과 영향을 조사하는 것을 목적으로 하였다.
방법: 한국 인구 기반 ‘두통 및 수면의 연중 변화(Circannual Change in Headache and Sleep)’ 연구에 참여한 2,548명의 기저 데이터를 분석하였다. (🧵 1/4)
방법: 한국 인구 기반 ‘두통 및 수면의 연중 변화(Circannual Change in Headache and Sleep)’ 연구에 참여한 2,548명의 기저 데이터를 분석하였다. (🧵 1/4)
두통을 넘어선 통증: 인구 기반 연구를 통한 편두통 및 긴장성 두통에서 신체 통증의 임상적 함의
▶️ 논문읽기
📚 출처: The journal of headache and pain
👤 저자: Woo-Seok Ha et al.
📅 날짜: 2026년 03월 20일
🆔 PMID: 41857711
🔗 DOI: 10.1186/s10194-026-02334-x
#편두통논문g/%ED%8E%B8%EB%91%90%ED%86%B5%EB%85%BC%EB%AC%B8" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통논문 #편두통hashtag/%ED%8E%B8%EB%91%90%ED%86%B5" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통 #펍메드hashtag/%ED%8E%8D%EB%A9%94%EB%93%9C" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#펍메드
▶️ 논문읽기
📚 출처: The journal of headache and pain
👤 저자: Woo-Seok Ha et al.
📅 날짜: 2026년 03월 20일
🆔 PMID: 41857711
🔗 DOI: 10.1186/s10194-026-02334-x
#편두통논문g/%ED%8E%B8%EB%91%90%ED%86%B5%EB%85%BC%EB%AC%B8" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통논문 #편두통hashtag/%ED%8E%B8%EB%91%90%ED%86%B5" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통 #펍메드hashtag/%ED%8E%8D%EB%A9%94%EB%93%9C" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#펍메드
두통을 넘어선 통증: 인구 기반 연구를 통한 편두통 및 긴장성 두통에서 신체 통증의 임상적 함의
배경: 신체 통증은 삶의 질에 상당한 영향을 미친다. 그러나 두통과 신체 전반의 통증 사이의 관계는 여전히 명확하지 않다. 본 인구 기반 단면 연구는 편두통 및 긴장형 두통(TTH) 환자에서 신체 통증의 유병률과 영향을 조사하는 것을 목적으로 하였다.
방법: 한국 인구 기반 ‘두통 및 수면의 연중 변화(Circannual Change in Headache and Sleep)’ 연구에 참여한 2,548명의 기저 데이터를 분석하였다. 참가자들은 편두통군(n = 145), TTH군(n = 805...
pubmed.ncbi.nlm.nih.gov
March 20, 2026 at 11:12 AM
두통을 넘어선 통증: 인구 기반 연구를 통한 편두통 및 긴장성 두통에서 신체 통증의 임상적 함의
▶️ 논문읽기
📚 출처: The journal of headache and pain
👤 저자: Woo-Seok Ha et al.
📅 날짜: 2026년 03월 20일
🆔 PMID: 41857711
🔗 DOI: 10.1186/s10194-026-02334-x
#편두통논문g/%ED%8E%B8%EB%91%90%ED%86%B5%EB%85%BC%EB%AC%B8" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통논문 #편두통hashtag/%ED%8E%B8%EB%91%90%ED%86%B5" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통 #펍메드hashtag/%ED%8E%8D%EB%A9%94%EB%93%9C" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#펍메드
▶️ 논문읽기
📚 출처: The journal of headache and pain
👤 저자: Woo-Seok Ha et al.
📅 날짜: 2026년 03월 20일
🆔 PMID: 41857711
🔗 DOI: 10.1186/s10194-026-02334-x
#편두통논문g/%ED%8E%B8%EB%91%90%ED%86%B5%EB%85%BC%EB%AC%B8" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통논문 #편두통hashtag/%ED%8E%B8%EB%91%90%ED%86%B5" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#편두통 #펍메드hashtag/%ED%8E%8D%EB%A9%94%EB%93%9C" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#펍메드
A labour of love. Congrats to Calum & colleagues for 6 years of research being recognized by their publication in eLife. The groups discovered that the gene DIO3 is essential for circannual timing in mammals. Work funded by @leverhulme.ac.uk
@sbohvm.gla.ac.uk
elifesciences.org/reviewed-pre...
@sbohvm.gla.ac.uk
elifesciences.org/reviewed-pre...
Hypothalamic deiodinase type-3 establishes the period of circannual interval timing in mammals
elifesciences.org
July 31, 2025 at 10:43 AM
A labour of love. Congrats to Calum & colleagues for 6 years of research being recognized by their publication in eLife. The groups discovered that the gene DIO3 is essential for circannual timing in mammals. Work funded by @leverhulme.ac.uk
@sbohvm.gla.ac.uk
elifesciences.org/reviewed-pre...
@sbohvm.gla.ac.uk
elifesciences.org/reviewed-pre...
Excellent presentation by Calum today during the research theme seminar. First time seeing all his work looking at circannual timing of reproduction in the POA and AvPv. Something cool is a brewin'
December 4, 2024 at 5:21 PM
Excellent presentation by Calum today during the research theme seminar. First time seeing all his work looking at circannual timing of reproduction in the POA and AvPv. Something cool is a brewin'
At the old alma mater - Western University (aka UWO) to present the labs research on circannual interval timers, torpor (ie hibernation) and rheostasis. It was such an amazing time visiting friends and colleagues. Thanks, Scott, Centre for Animal Movement and the Dept Biology
November 19, 2024 at 8:25 PM
At the old alma mater - Western University (aka UWO) to present the labs research on circannual interval timers, torpor (ie hibernation) and rheostasis. It was such an amazing time visiting friends and colleagues. Thanks, Scott, Centre for Animal Movement and the Dept Biology
•Birds have multiple opsins as deep #brain photoreceptors
•The information transmitted by DBP modulates the circannual rhythms in birds
•DBP sends photoperiodic information to #circadian system
•The activity of DBPs is sufficient to synchronize avian physiology
www.sciencedirect.com/science/arti...
•The information transmitted by DBP modulates the circannual rhythms in birds
•DBP sends photoperiodic information to #circadian system
•The activity of DBPs is sufficient to synchronize avian physiology
www.sciencedirect.com/science/arti...
May 17, 2025 at 8:51 AM
•Birds have multiple opsins as deep #brain photoreceptors
•The information transmitted by DBP modulates the circannual rhythms in birds
•DBP sends photoperiodic information to #circadian system
•The activity of DBPs is sufficient to synchronize avian physiology
www.sciencedirect.com/science/arti...
•The information transmitted by DBP modulates the circannual rhythms in birds
•DBP sends photoperiodic information to #circadian system
•The activity of DBPs is sufficient to synchronize avian physiology
www.sciencedirect.com/science/arti...
Circannual prevalence of vitamin D insufficiency in older and minoritized ethnic adults in Northern Britain: screening outcomes from a clinical trial (ISRCTN13778806). https://www.medrxiv.org/content/10.1101/2025.11.17.25340416v1
November 20, 2025 at 1:27 AM
Circannual prevalence of vitamin D insufficiency in older and minoritized ethnic adults in Northern Britain: screening outcomes from a clinical trial (ISRCTN13778806). https://www.medrxiv.org/content/10.1101/2025.11.17.25340416v1
Monitoring seizure cycles with seizure diaries https://www.medrxiv.org/content/10.1101/2024.08.28.24312758v1
Monitoring seizure cycles with seizure diaries https://www.medrxiv.org/content/10.1101/2024.08.28.24312758v1
Objective: The periodicity of seizures, ranging from circadian to circannual cycles, is increasingly
www.medrxiv.org
August 30, 2024 at 10:26 PM
Monitoring seizure cycles with seizure diaries https://www.medrxiv.org/content/10.1101/2024.08.28.24312758v1
Given the vast majority of cis men go through emotionally volatile multiscale hormonal cycling every 24 hours, nested in a circalunar cycle, and nested again in a circannual cycle as a hierarchy, guess we’re left with cis women to defend the country as the most emotionally stable of the population?
September 10, 2025 at 7:08 PM
Given the vast majority of cis men go through emotionally volatile multiscale hormonal cycling every 24 hours, nested in a circalunar cycle, and nested again in a circannual cycle as a hierarchy, guess we’re left with cis women to defend the country as the most emotionally stable of the population?
Endogenous circannual cycles drive seasonal cold hardening in temperate ants https://www.biorxiv.org/content/10.1101/2025.07.09.663877v1
July 14, 2025 at 5:32 PM
Endogenous circannual cycles drive seasonal cold hardening in temperate ants https://www.biorxiv.org/content/10.1101/2025.07.09.663877v1
Hypothalamic deiodinase type-3 establishes the period of circannual interval timing in mammals https://www.biorxiv.org/content/10.1101/2025.04.22.650143v1
April 29, 2025 at 7:15 PM
Hypothalamic deiodinase type-3 establishes the period of circannual interval timing in mammals https://www.biorxiv.org/content/10.1101/2025.04.22.650143v1
Hypothalamic deiodinase type-3 establishes the period of circannual interval timing in mammals https://www.biorxiv.org/content/10.1101/2025.04.22.650143v1
April 29, 2025 at 7:15 PM
Hypothalamic deiodinase type-3 establishes the period of circannual interval timing in mammals https://www.biorxiv.org/content/10.1101/2025.04.22.650143v1