BIO:
Dr Johnston has successfully led projects studying links between circadian, metabolic and nutritional physiology funded by the BBSRC, MRC and Diabetes-UK. His recent research outputs include the analysis of: timed meal effects on the human circadian system (Wehrens et al 2017 Current Biology); human metabolome rhythms (Isherwood et al 2017 FASEB J); human skeletal muscle rhythms (Loizides-Mangoldet al 2017 PNAS; Perrin et al 2018 eLIFE) and time-restricted feeding in humans (Antoni et al 2018 J Nutr Sci). He has also published widely on the topic of hormone rhythmicity. He is a Trustee of the British Society for Neuroendocrinology, and was a core member of BBSRC Committee A. He has a strong track record in public engagement via TV, radio, podcast and written media. He has experience working with the food industry, via consultancy work and research collaborations.
Show Notes:Websites and Social Media Links:
Website – University of Surrey ProfileEmail:  j.johnston@surrey.ac.uk
 
Books Mentioned:
The Circadian Prescription: Get in Step with Your Body's Natural Rhythms
The Four AgreementsRoss O’Carroll-Kelly booksJon’s Book Recommendation(s):
PJ Wodehouse
Articles & Research Mentioned:High Caloric intake at breakfast vs. dinner differentially influences weight loss of overweight and obese women
Meal Timing Regulates the Human Circadian System.
Podcast Mentioned:
ATSW: Episode 210: Greg Potter - Circadian Rhythm masterclassOPEX Podcast: #59: DR. AMY BENDER PHD & SLEEP RESEARCHER
 
People and Resources mentioned:
Till RoennebergGreg PotterMark KilgallonAmy BenderJames Fitzgerald BatmanSherlock HolmesStarship enterprise
Mstislav RostropovichChiyonofuji MitsuguMartin Luther King JrGenghis KhanFlorence Nightingale
 
Time-Line:0:00 – 1:47 - Robbie intro’s the show and asks Jon to introduce himself 1:48 – 3:30 - Robbie asks Jon how he got into circadian biology research? 3:31 – 9:45 - Robbie asks Jon to discuss his research around peripheral circadian clock mechanisms in the body
9:46 – 12:47 - Robbie asks Jon what is the relationship between the peripheral and central circadian clocks?12:48 – 16:12 - Robbie asks Jon how much of an impact does shift work have on circadian regulation and how much of detriment the electrical lightbulb has had on human health?16:13 – 21:18 - Robbie asks Jon to share his thoughts on the effects of meal timing on circadian regulation 21:19 – 23:39 - Robbie asks Jon what time of day should humans stop eating and does this time change with the different seasons?
23:40 – 32:47 - Robbie asks Jon about some cofounding factors that may change the metabolic regulation of body across the day?
32:48 – 39:35 - Robbie asks Jon about chronotypes
39:36 – 48:16 - Robbie asks Jon about the circadian timing of medicine and medications48:17 – 51:31 - Robbie asks Jon if melatonin has an antagonistic effect on insulin?51:32 – 56:21 -Robbie asks Jon how applicable are rodent study models when applying their findings to  humans? 56:22 – 1:02:32 - Robbie asks Jon for his thoughts on evolution and meal-timing patterns that have been proposed among hunter-gathers societies 1:02:33 – 1:08:21 - Robbie asks Jon about meal composition and its effects on circadian regulation?1:08:22 – 1:13:29 - Robbie asks Jon about what social changes would he like to see put in place going forward to optimize circadian health?1:13:30 – 1:15:26 - Robbie asks Jon for his top and current book recommendations1:15:27 – 1:16:56 - Robbie asks Jon how he learns
1:16:57 – 1:19:15 - Robbie asks Jon what have been the biggest lessons he has earned so far in his life?
1:19:16 – 1:20:21 - Robbie asks Jon, if he only had 1 year left on planet earth, how would he spend that year and why?
1:20:22 – 1:26:11 - Robbie asks Jon, if he could invite 5 people to dinner, dead or alive, who would he invite and why?
1:26:12 – 1:27:45 - Robbie wraps up the show!