John Speakman @johnspeakman4.bsky.social · 09/09/2026Soldier ants. South of France. Nikon z9 Nikkor 105mm macro lens. 010
John Speakman @johnspeakman4.bsky.social · 09/08/2026...and a landed one, lowering mouthparts to feed. Nikon Z9 041
John Speakman @johnspeakman4.bsky.social · 09/08/2026Hoverfly in flight. Scotland, UK. Nikon Z9 1/2500s 105mm f2.8 macro lens. even at this speed the wings are blurry 150
John Speakman @johnspeakman4.bsky.social · 26/07/2026My barista today made me a latte with a coronal section of a mouse brain on the top. 0181
John Speakman @johnspeakman4.bsky.social · 01/07/2026Common green bottle fly (Lucilia sp.). So beautiful a thing commonly swatted to a pulp without a second thought. 140
Reposted by John SpeakmanRoyal Society Publishing @royalsocietypublishing.org · 09/06/2026Our reviewer rewards recognise the vital contribution reviewers make to the publishing process. When you review an article in one of our journals, you'll be eligible for a discount towards the Article Processing Charge of publishing in our fully open access journals: royalsociety.org/journals/rev... 052
Reposted by John SpeakmanLife Metabolism @lifemetabolism.bsky.social · 03/05/2026New issue online in Life Metabolism: Vol. 5 Issue 2 brings together new work on mitophagy, gut circadian rhythms, MASLD, calorie restriction, β-cell function, fasting-induced hepatic lipid metabolism, and precision nutrition. Explore the full issue: academic.oup.com/lifemeta/iss...academic.oup.comVolume 5 Issue 2 | Life Metabolism | Oxford AcademicLife Metabolism aims to provide an open access platform for the publication of works of high significance and broad interest in all areas of metabolism 121
Reposted by John SpeakmanLife Metabolism @lifemetabolism.bsky.social · 03/05/2026Original Article @johnspeakman4.bsky.social: A functionally integrated cross-tissue alternative splicing program during short-term calorie restriction doi.org/10.1093/life...doi.orgValidate User 121
Reposted by John SpeakmanLife Metabolism @lifemetabolism.bsky.social · 28/04/2026New issue online | Life Metabolism Vol. 5 Issue 1 features Research Highlights and Original Articles spanning circadian metabolism, macrophage sensing, gut urate metabolism, the gut–liver axis, lean MAFLD, and hepatic autophagy. Read the issue: academic.oup.com/lifemeta/iss... 021
John Speakman @johnspeakman4.bsky.social · 12/04/2026really looking forwards to this... lets hope there will be enough jet fuel to attend!! 130
Reposted by John SpeakmanLife Metabolism @lifemetabolism.bsky.social · 30/03/2026Reducing the strain on calorie restriction @johnspeakman4.bsky.social url: academic.oup.com/lifemeta/art...academic.oup.comReducing the strain on calorie restrictionAbstract. Calorie restriction (CR) is a nutritional intervention known to delay aging and extend lifespan across a wide range of species, raising the possi 121
John Speakman @johnspeakman4.bsky.social · 24/10/2025RACMEM 2025 is over and everyone is home safely. Time for some relaxation and photography. White throated kingfisher. zoom in for feather details. Nikon Z9 with 600m f4 lens. 1/1000s f5.6. 080
John Speakman @johnspeakman4.bsky.social · 20/10/2025Immature black winged stilt. Shenzhen. October 2025. Nikon z9 600mm f4 1/10000s 072
John Speakman @johnspeakman4.bsky.social · 23/09/2025RACMEM 2025 Important notice Registrations will close on the 30th September (or when venue capacity is reached if sooner). Late registrations will not be accepted. If you wish to attend and didn't yet register this is your last chance. Please register at www.racmem.com Please retweet.racmem.comHome | RACMEMRecent Advances and Controversies in the Measurement of Energy Metabolism 022
John Speakman @johnspeakman4.bsky.social · 02/09/2025Bee fly eye. Zoom in for detail of ommatidia. Nikon z9 with 105,, f2.8 macro and 250 Raynox. 1/6400 s f10 140
Reposted by John SpeakmanKevin Hall @kevinh-phd.bsky.social · 01/09/2025After years of work with @juliabelluz.bsky.social, it's hard to believe that our book FOOD INTELLIGENCE will be published this month! @barnesandnoble.com has 25% off pre-orders placed on Sept 3-5. www.barnesandnoble.com/w/food-intel... 2206
John Speakman @johnspeakman4.bsky.social · 31/08/2025Bee fly with pollen on its face. Nikon z9 with 105mm f2.8 macro lens and Raynox 250. 1/6400 s f10. 050
John Speakman @johnspeakman4.bsky.social · 30/08/2025Two flies on a dead shrew. Nikon Z9 with 105mm f2.8 macro lens with raynox 250 fitted. !/6400 s f4 030
John Speakman @johnspeakman4.bsky.social · 16/08/2025Singer and bassist. Meeting jazz club, Shenzhen. Nikon Z6 020
John Speakman @johnspeakman4.bsky.social · 09/08/2025Li River. Guilin to Yongshou. 2006. Taken on film and now digitised. 050
John Speakman @johnspeakman4.bsky.social · 02/08/2025flying carrion crow against blue sky. Aberdeen, Scotland, UK. August 2025. Nikon Z9 with 200mm f2.8 lens. 1/10000s 040
John Speakman @johnspeakman4.bsky.social · 03/07/2025RACMEM 2025 Abstract submission for contributed short talks and posters is now open. There will be a bunch of 500 USD prizes for the best talks and posters, by ECRs, post docs and students. Abstract submission form at racmem.comracmem.comHome | RACMEMRecent Advances and Controversies in the Measurement of Energy Metabolism 021
John Speakman @johnspeakman4.bsky.social · 03/06/2025wood pigeon on silver birch tree. Aberdeen. May 2025. 060
John Speakman @johnspeakman4.bsky.social · 11/05/2025Chinese pond heron in summer plumage. May 2025. Shenzhen. Nikon z6. 021
Reposted by John SpeakmanAlessandro Bartolomucci Lab @bartolomuccilab.bsky.social · 25/04/2025Food insecurity drives obesity and adiposity, but how is unclear. A recent study by @clemmensenc.bsky.social developed a mouse model for this phenomenon lnkd.in/d8pEp2qv Happy to share a commentary written with @johnspeakman4.bsky.social with our take on that study doi.org/10.1002/oby....doi.orgScarce and unpredictable, yet obesogenic: modeling the impact of food insecurity on adiposity in miceClick on the article title to read more. 175
Reposted by John SpeakmanCláudia Gil @claudiagil93.bsky.social · 26/04/2025Check out this great commentary by @bartolomuccilab.bsky.social and @johnspeakman4.bsky.social on our recent paper, that investigates the role of #foodinsecurity on energy homeostasis and #adiposity in mice 💡 163
Reposted by John SpeakmanKevin C Klatt, PhD, RD @kcklatt.bsky.social · 30/04/2025Issues of diet design in rodent studies discussed here with @kevinh-phd.bsky.social @johnspeakman4.bsky.social pubmed.ncbi.nlm.nih.gov/37485302/pubmed.ncbi.nlm.nih.govChowing down: diet considerations in rodent models of metabolic disease - PubMedDiet plays a substantial role in the etiology, progression, and treatment of chronic disease and is best considered as a multifaceted set of modifiable input variables with pleiotropic effects on a va... 151
John Speakman @johnspeakman4.bsky.social · 10/04/2025RACMEM 2025 to be held in Shenzhen 13th to 17th October is now open for registration. Please spread the word. www.racmem.orgracmem.orgHome | RACMEMRecent Advances and Controversies in the Measurement of Energy Metabolism 000
John Speakman @johnspeakman4.bsky.social · 27/03/2025Looking for new drugs to treat obesity by repurposing old ones. Very happy to have been part of this study looking at the weight loss effects of Halofuginone acting via both FGF21 and GDF15. In Science Advances www.science.org/doi/10.1126/...science.orgThe clinical antiprotozoal drug halofuginone promotes weight loss by elevating GDF15 and FGF21Halofuginone curbs weight gain in mice and pigs. 040
John Speakman @johnspeakman4.bsky.social · 10/03/2025Coming soon. Registration for RACMEM 2025 to be held in Shenzhen China will open in early April. Keep an eye on the site www.racmem.com places limited to 230. please retweet (or whatever the equivalent is on here)racmem.comHome | RACMEMRecent Advances and Controversies in the Measurement of Energy Metabolism 011
Reposted by John SpeakmanKevin C Klatt, PhD, RD @kcklatt.bsky.social · 23/02/2025MAHA nutrition advisor & chiropractor says the 1st nutrition issue he wants addressed is the 'food pyramid', a USDA food guide tool that was sunset in 2011 (it's been MyPlate since). Glad to see we are finally taking nutrition very seriously. www.foxnews.com/food-drink/a...foxnews.comAmerican nutrition a top priority for MAHA as the 'Knowledge Doc' weighs in"The Knowledge Doc" Eric Berg is taking a stand in the fight for better nutrition as RFK Jr. moves to challenge food industry to "Make America Healthy Again." 96112
John Speakman @johnspeakman4.bsky.social · 19/02/2025Yellow-eyed penguin. OPERA Eco reserve. Otago peninsula, near Dunedin, South island, New Zealand. 030
John Speakman @johnspeakman4.bsky.social · 09/02/2025Paradise shelduck in the afternoon sun. New Zealand endemic. Christchurch. Feb 2025. Nikon z6 with 120mm lens. F4 1/3200s 040
John Speakman @johnspeakman4.bsky.social · 08/02/2025University of Canterbury. Christchurch, New Zealand. Feb 2025 050
John Speakman @johnspeakman4.bsky.social · 02/02/2025Gannet coming in to land looking like a ballerina. They are so graceful in the air but so clumsy on the ground. Murawai gannet colony, North Island, New Zealand. February 2025. Nikon z9 with 200mm 1/4000s f14. 010
John Speakman @johnspeakman4.bsky.social · 02/02/2025Australasian Gannet in flight. Murawai gannet colony. North Island, New Zealand. February 2025. Nikon Z9 with 200mm lens. 1/3200s f14 030
John Speakman @johnspeakman4.bsky.social · 27/01/2025Swamp hen adult. Auckland. New Zealand. January 2025. Nikon Z9 200mm lens. 1/4000s f5.6. 0100
Reposted by John Speakmanconscienhealth.bsky.social @conscienhealth.bsky.social · 26/01/2025How robust are the links between #diet, #obesity, and #health? A new study in @naturefood.bsky.social suggests some fundamental flaws. HT: @johnspeakman4.bsky.social conscienhealth.org/2025/01/the-... 022
John Speakman @johnspeakman4.bsky.social · 26/01/2025Spur-winged plover. Auckland. New Zealand. Nikon z9 200mm lens. hand held 1/4000s f8 0130
John Speakman @johnspeakman4.bsky.social · 25/01/2025Immature swamp hen stepping out. PiHa North Island, New Zealand. January 2025. Nikon Z9 200mm + 2x converter. 1/4000 f8 040
John Speakman @johnspeakman4.bsky.social · 24/01/2025A rather angry looking spotted dove. Auckland, New Zealand. Nikon Z9. 200mm lens with 2x converter. f5.6 1/1250s hand held. 140
John Speakman @johnspeakman4.bsky.social · 24/01/2025Tikaokao Quail New Zealand. Auckland. North Island. Nikon Z9 200mm lens with 2x teleconverter. f 5.6 1/1250s January 2025 0100
John Speakman @johnspeakman4.bsky.social · 23/01/2025LIFE METABOLISM Travel awards @lifemetabolism.bsky.social sponsored by @sablesys.bsky.social and the final winner is Elijah Lowenstein @lowensteined.bsky.social from BIDMC, Harvard to attend the Keystone meeting on Ingestive behaviour. Congratulations... 061
John Speakman @johnspeakman4.bsky.social · 22/01/2025LIFE METABOLISM Travel prizes @lifemetabolism.bsky.social Sponsored by @sablesys.bsky.social Our 3rd winner is Zeyuan Zhang from Stanford who will present his work on novel products of the CART gene at the Metabolic signalling cold spring harbor meeting Congrats... 082
John Speakman @johnspeakman4.bsky.social · 22/01/2025LIFE METABOLISM Travel awards. @lifemetabolism.bsky.social sponsored by @sablesys.bsky.social Our 2nd prize winner is @lundjens.bsky.social from the Novo-nordisk foundation to attend the keystone meeting in Banff to show his work on whether fatness drives obesity in mice on HFD Congrats.. 0110
John Speakman @johnspeakman4.bsky.social · 22/01/2025LIFE METABOLISM Travel award @lifemetabolism2 Sponsored by @SableSys The first of our 4 winners is Enchen Zhou from UC San Diego who will go to the ADA meeting In Chicago this summer to present his work on Liver X receptors in the gut Congratulations... 030
John Speakman @johnspeakman4.bsky.social · 22/01/2025@lifemetabolism.bsky.social LIFE METABOLISM travel awards Sorry for the delay in reaching a decision on these awards sponsored by @sablesys.bsky.social . This year we had a very strong field which has necessitated several rounds of review. Finally, the decisions about who has won have been made 1/2 131