Hur mycket försämrat blir immunförsvaret under en deff?

[Diomedea exulans]

Relevant fråga i Coronatider. När man ändå inte får träffa folk kan man lika gärna dra en deff, för det gör ju inget att man inte orkar vara trevlig och man kan skippa allt socialt ätande.

Jag vet att frågan varit uppe förut, men trots det kan jag inte hitta en tråd om det i denna forumdel.

Går det att minimera eventuell immunförsvarsförsämring genom att t ex äta extra mycket grönsaker?

[LunaSpice]

Immunförsvaret blir försämrat med ungefär 5.

[Wipflash]

Hur mycket blir immunförsvaret försvagat efter träningen då, 5 eller 10? Kanske smartast att inte träna alls

[Diomedea exulans]

Jag hör vad ni säger!

[Pherall]

Blir inte immunförsvaret bättre? Tänker att det bara blir sämre ifall man käkar så lite att man inte återhämtar sig. Eller nåt ;p

[Diomedea exulans]

Ursprungligen postat av Pherall

Blir inte immunförsvaret bättre? Tänker att det bara blir sämre ifall man käkar så lite att man inte återhämtar sig. Eller nåt ;p

Det vore ju opti ju. Komma ur karantän som en grekisk gud.

[Sheogorath]

Ursprungligen postat av Pherall

Blir inte immunförsvaret bättre? Tänker att det bara blir sämre ifall man käkar så lite att man inte återhämtar sig. Eller nåt ;p

Om du går ner i vikt ligger du på kaloriunderskott. Det är knappast någon bra miljö för varken återhämtning eller immunförsvar.

[King Grub]

Inga direkta bevis.

"does energy deficiency decrease immunity and increase infection in athletes? A 25% calorie restriction, over a 2-year period in non-obese adults (BMI 25.1 kg/m2), resulted in a 10% body weight loss but did not decrease in-vivo cell-mediated immunity (skin delayed-type hypersensitivity test) or antibody responses to T- and B-cell-mediated vaccinations (hepatitis A, tetanus/diphtheria and pneumococcal); and had no effect on clinical infections [79]. On the contrary, the authors observed salubrious benefits of moderate calorie restriction, without malnutrition, on inflammation; as demonstrated by 40–50% lower circulating C-reactive protein and tumour necrosis factor-α. These inflammatory molecules have well-established roles in the pathogenesis of multiple chronic diseases and aging; as such, the findings align with the contemporary view that dietary restriction without malnutrition elicits a healthy phenotype and extends the lifespan [79,80,81]. Of course, the findings of research examining the influence of long-term moderate energy deficits on immunity in non-obese adults are interesting but arguably of limited relevance to athletic populations. For example, there are obvious population differences in body composition (average BMI of 25.1 kg/m2 is considered overweight [79]) and the energy deficit in athletic populations typically results from high energy expenditure during heavy training, rather than calorie restriction. Notwithstanding, studies in athletic and military populations investigating short-term severe energy restriction (48 h, ~ 90% restriction) and long-term moderate energy restriction during training (8 weeks, ~ 25% restriction) show only subtle and short-lived changes in immunity [82,83,84]; and no increase in the immune-modulating hormone, cortisol. Concordant with these findings, low energy availability in female and male endurance athletes has little effect on circulating cortisol [85]. This is perhaps not surprising as a recent meta-analysis showed that circulating cortisol increases in states of complete fasting but typically not during less severe energy restriction [86]. It is a common misconception, and an oversimplification, that increases in circulating cortisol always decrease immunity [87]; the reality is more nuanced. For example, increases in circulating cortisol during short-term stress (lasting minutes to hours) can have adjuvant-like effects that enhance immunity [31, 88]. In contrast, chronic stress (lasting days to months) can disrupt the cortisol circadian rhythm and increase glucocorticoid resistance, with harmful effects on immunity, inflammation and infection resistance [31, 89]. In summary, direct evidence to support the notion that energy deficiency of the magnitude often reported in elite female athletes compromises immunity is currently lacking."

https://link.springer.com/article/10...79-019-01160-3

[xan]

Ursprungligen postat av LunaSpice

Immunförsvaret blir försämrat med ungefär 5.

Ha! Du trodde frågan inte gick att svara på.

Grub bless

Ursprungligen postat av King Grub

Inga direkta bevis.

"does energy deficiency decrease immunity and increase infection in athletes? A 25% calorie restriction, over a 2-year period in non-obese adults (BMI 25.1 kg/m2), resulted in a 10% body weight loss but did not decrease in-vivo cell-mediated immunity (skin delayed-type hypersensitivity test) or antibody responses to T- and B-cell-mediated vaccinations (hepatitis A, tetanus/diphtheria and pneumococcal); and had no effect on clinical infections [79]. On the contrary, the authors observed salubrious benefits of moderate calorie restriction, without malnutrition, on inflammation; as demonstrated by 40–50% lower circulating C-reactive protein and tumour necrosis factor-α. These inflammatory molecules have well-established roles in the pathogenesis of multiple chronic diseases and aging; as such, the findings align with the contemporary view that dietary restriction without malnutrition elicits a healthy phenotype and extends the lifespan [79,80,81]. Of course, the findings of research examining the influence of long-term moderate energy deficits on immunity in non-obese adults are interesting but arguably of limited relevance to athletic populations. For example, there are obvious population differences in body composition (average BMI of 25.1 kg/m2 is considered overweight [79]) and the energy deficit in athletic populations typically results from high energy expenditure during heavy training, rather than calorie restriction. Notwithstanding, studies in athletic and military populations investigating short-term severe energy restriction (48 h, ~ 90% restriction) and long-term moderate energy restriction during training (8 weeks, ~ 25% restriction) show only subtle and short-lived changes in immunity [82,83,84]; and no increase in the immune-modulating hormone, cortisol. Concordant with these findings, low energy availability in female and male endurance athletes has little effect on circulating cortisol [85]. This is perhaps not surprising as a recent meta-analysis showed that circulating cortisol increases in states of complete fasting but typically not during less severe energy restriction [86]. It is a common misconception, and an oversimplification, that increases in circulating cortisol always decrease immunity [87]; the reality is more nuanced. For example, increases in circulating cortisol during short-term stress (lasting minutes to hours) can have adjuvant-like effects that enhance immunity [31, 88]. In contrast, chronic stress (lasting days to months) can disrupt the cortisol circadian rhythm and increase glucocorticoid resistance, with harmful effects on immunity, inflammation and infection resistance [31, 89]. In summary, direct evidence to support the notion that energy deficiency of the magnitude often reported in elite female athletes compromises immunity is currently lacking."

https://link.springer.com/article/10...79-019-01160-3

[Diomedea exulans]

Ursprungligen postat av xan

Ha! Du trodde frågan inte gick att svara på.

Man måste älska när de arroganta skithögarna har fel.

[LunaSpice]

Ursprungligen postat av Diomedea exulans

Man måste älska när de arroganta skithögarna har fel.

Fan då! Känner mig som en arrogant skithög!

[Tjenatja]

Som men alla hälso och träningsrelaterade frågor sjukt individuellt! Käkar man näringsrik kost på underskott (hälsosam mat) kontra överskott på donken o pizza så tror jag fan underskottet kommer vinna i immunförsvar. Själv hållit mig kry i över 2 år, troligtvis pga alla grönskar jag äter samt tränar och rör mig väldigt mycket. Legat på underskott i 4-5 månader och inte blivit sjuk än. Peppar peppar. Själv upplevt och läst om folk som "slutar" bli sjuka genom att springa ofta, bara kolla världens längsta runstreak. 50+år (jogging varje dag). Han kan ju inte haft ngn allvarligare sjukdom under den tiden gissar jag på

[Tjenatja]

Sen är det ju hälsosammare att leva på underskott än överskott oavsett kvalitet på mat. Forskas ju som fan i hur man bromsar åldrandet. Kalorirestriktion är en av de bättre metoderna. Kroppen lär ju dock anpassa sig till kalorierna med tiden, så räknas ju inte som underskott tillslut i guess.

[King Grub]

Det är det som är mekanismen. Kroppen anpassar sig. Allt saktar ned, inklusive kaloriförbrukningen. Kroniskt, livslångt "underskott" räknas mot balans, hur det hade varit utan kalorirestriktionen.

[Armed Dingo]

Bulimiterna kommer överleva oss alla