New Scientist 28Mar2020

(coco) #1

TltE IMMUNE DIET


Oneofthemmtsumlllful
.....................
dimMmld II Cllaric rastric:llDn.
ft,..._•.......,cutln
-lntaklofupto&Oper
c.t. In
,..,...,.,...
..... thattmbanputtwaugll
1111,framflultlllsta ....... lt
...... llfespanand t.althspan,
lwnumberof dknH fnle,_,.
athandoflfa.
lbe ...............
lt~---·utfolwy
~10llll'Wltion,which
prlarttlllsnipalrandu'Vlvlll
pdMliptMrgrowthllnd
repraductlan. c:almle-nlstrfded
an1m111W111tu be ....,,nttar,
metaballcallr lalthler •nd
mmt.llrlharparthan"1ale
a.t..tatwllL TiwrllllOtan
•stroneerlmmune....,-.
~alaric
NltlfdlDn iHJdlemelyhllld10
m111nta1n......av.1utth ...
........... lcltwfthaut
going on• permanent starvatlan
diet. lbellaJlstDdndlvabt•
n~Pllthwllrhlde
Clllls aillld mTOR. Whan Clllaries


....... It~°"'
Initiating ... metaballc calCall8
lhattlanllllans,..svmm Into
famlnemade. 'lhepathWllJan
alsobetaggledoffwlthngs
ailled mTOR lnhlbltDrl, the
balMmawn .........
lbe*°tlgatavldenmlat
ltll•nmunebaallarmmes
fram. clnlCll trt.l bf h blOl9Ch
.....,.NITOAlllD,lmlldln
..........an.orns..
111mm..........., ..
gradual dllc:INofcumwnune
~wlthage<-emm
stmy).a..t,.., lwm1111111J181'1



  • p-.,bo-cuiiliullld lbldyof.
    ........,.memTOR"9hlbitaron
    .,.._ ..... or&&who


naiwd•dalltjultberant•flu
vaan. 'lhmeglwnth9chg
shawedastnlnger...,...ta
hlnJedlDnandanuptiofthalr
.,.....geneapreu1an. asome
mpedsoflmmunefwlcllan ..

clell'lr"""'9 beHar, .... ..,
Mlnnldr, NITORllWI chief
mlldlmlofflcer.1bechg h•
uaflllldaphase•c111m1
trial farraamns that ani stlU
undnr.19tMlnnkk-andother
ra11•rdwsnotlmalwdinlw
---.. lwprindplea.t
mTOR lnhlbilorl an tl'9lt
lmmunwnce•standl.

CunlNG CALORIES
Samepeupla..,.llllHlll:ntwlth
....,,,. .. thoughltian't
offidllV NCllll'lllacl ...
mtl-agatngarimmun..._
drug. 'lh ..... otherwapstD
ac:hllMt mTOR lnhlblllan thaugh.
O•ll lntamllla11,.....


  • .......,s1ataorC11Drtc
    iadiildlanthatlsanaughtD
    swltdl off mTORfor •ll10ft
    wlllleand ltllobtlinbbandls.
    nw. .. v.tausreglnw
    lndudingh l.1:8-whldl
    lmahnls~whewlng
    alllltes far 11 ha&n and ani,
    mtfngln anl-haurwlndow.
    E¥a'I dane once• W8llr, this
    llanefr.llvew.rof lluwln1
    ...................... th.
    Immune....,... Earcilels
    •Im• PnMn mTOR inhiliitar.
    Ewn If. fasting diet llll't
    .,..., .............
    ,.._..htduwnanhlMt
    lmmune·baasllng ellacls.
    Amm:llng lo lannla llambarg
    atllwUlllvmltyof Mllml
    lnFloridl, being obele
    ..,, 1191th9lnTlunesvstam
    tD•llmilu~•belng
    lmmun.......__.,.11
    ........ wHh. dedlne In
    thefwlcllanofthelmmme
    ......... cellsandlaw
    praducllanof mlbadllSln
    ........... ,...., .....
    ls being ..... Mpoee I
    tlslue ...... -..i:s
    ....................
    sap llambelg. -Sctobelftr
    Is ....... with poor
    vacclne1...-. ... 1n
    peoplewhoaniJIUll.•


1belmmuna
systamtm
many
defen~
Including
dendritkcalls
(lop..,., Md.
rangeofwhftw
blood cells
thatlMltout
and gobble up
or lclU Invaders

For now, probably the best way to gauge your
immune age Is to get your blologlcalage tested,
because the two seem to be roughly correlated.
Regardless, you don't need toknowyour
immune ageto take steps to start lowering it.
Andittumsoutthatmanyoftheemerglng
anti-ageing drugs and mategies do theirstuft
at least in part. by arresting or even reversing
immunosenescence.
Onekeyapproachtokeepingourimmune
age down:relates to the fact that as we get older,
some of our immune cells start to misbehave.
This la especially problematlcfor adasa of
immune cells called neutrophila, the most
commontypeofwhite bloodrell 1hesefonn
part of the innate immune system. the body's
first line of defence agajnstinfedion, and are
the bonlerfom=oftheimmunesystem.
patrolling tilelesslythrough the bloodstream
onthelookoutfor lwmful bacteria. When
they deb!ct: an intruder, they squeeze out of the
blood vessel and barrel towards their target,
~ then take It out in one of three waJI: engu]fing
!; it like Pac-Man, spraying it with deadly
G chemicals or suicidally disgorging theJrDNA
e and throwing it around the invader like a net
~ The process bywhichtheytwmel through
i tissues is caD.ed chemotaxis, and it becomes
; increasingly emtic as we age. Older
§ neutmphils can still detect invaders, but
~become much worse at hunting them down,
.. often blunderinghaplwanlly through tissue
Free download pdf