Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano

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Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Come possono cambiare gli schemi
alimentari nell’era post-insulinica?
                       Andrea Poli
        NFI - Nutrition Foundation of Italy, Milano
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Health effects of dietary risks in 195 countries, 1990–2017:
a systematic analysis for the Global Burden of Disease Study 2017

                                   GBD 2017 Diet Collaborators, Lancet, 2019
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Recommendations for salt/sodium intake in
 published guide-lines (NB: 4g Na = 10 g salt)
Source                  Salt (g/day)   Sodium (g/day)
EFSA 2005                                               The available data are not sufficient to establish an upper level. It is not
                                                        possible to determine a threshold level of habitual sodium consumption
                                                        below which there is unlikely to be any adverse effect on blood pressure.

WHO 2013                     5               2          Strong recommendation
WCRF/AICR 2016               5               2          Avoid salt-preserved, salted, or salty foods; preserve foods without using
                                                        salt (use refrigeration, freezing, drying, bottling, canning, fermentation).
Food Safety Authority        6              2.4         Achievable goal for the population at this time; it should not be regarded as
of Ireland 2016                                         an optimal or ideal level of consumption
Germany 2011, 2016         3.5-6                        Adequate intake for adults: 1500 mg sodium per day.
Nordic Nutrition             6              2.4         Feasible at the population level
Recommandations
2012
Scientific Advisory          6              2.4         Recommendation
Committee on
Nutrition 2003
Dietary Guideline for                       2.3         Goal for the general population; strong evidence that 'adults who would
Americans Committee                                     benefit from blood pressure lowering should combine the DASH dietary
2015                                                    pattern with lower sodium intake'.
AHA/ACC 2013                                2.4         For lowering blood pressure; 1.5 g/day can result in even greater reduction
                                                        in BP;
IOM 2013                    5.8              2.3        Tolerable upper intake level (
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Trend of salt intake measured by 24-h urine collection in
the Italian adult population between the 2008 and 2018
                 (CUORE Project surveys)

                    10,5 g/sale                     8,2 g/sale

                    9,5 g/sale                      7,2 g/sale

                                    Donfrancesco C et al, NMCD 2020
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Sodium excretion, cardiovascular events and
overall mortality in subjects with and without
       hypertension in the PURE Study
    Risk of death and major cardiovascular events

                             5 g di sodio = 12,5 g di sale

                                                             Mente A et al, Lancet, 2016
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Sodium excretion, cardiovascular events and
overall mortality in subjects with and without
       hypertension in the PURE Study
    Risk of death and major cardiovascular events

                                               5 g di sodio = 12,5 g di sale

                                                                        Mente A et al, Lancet, 2016
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Association Between Sodium Excretion, CVD
and Mortality in the Elderly: A Cohort Study

                                             All-cause mortality

                                                                                   >5.4 g Na/day

                                                                                           3.7-5.4 g Na/day
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Dose-response relation between dietary sodium
                 and blood pressure:
        a meta-regression analysis of 133 RCT

                             -1 mm Hg per -1 g/die di sale

                                          -5 g/sale die

       SR versus SBP effect in the upper 25th BP percentile of the population.   SR versus DBP effect in the lower 75th BP percentile of the population.

1 mmol = 23 mg di sodio                                                                     Graudal N et al, Am J Clin Nutr, 2019
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
… current evidence suggests that most of the world’s population consume a
moderate range of dietary sodium (2.3–4.6g/day) that is not associated with
increased cardiovascular risk, and that the risk of cardiovascular disease increases
when sodium intakes exceed 5 g/day. While current evidence has limitations, and
there are differences of opinion in interpretation of existing evidence, it is
reasonable, based upon observational studies, to suggest a population-level mean
target of 5 g/day, while
awaiting the results of large randomized controlled trials of sodium reduction on
incidence of cardiovascular events and mortality.
Come possono cambiare gli schemi alimentari nell'era post-insulinica? - Andrea Poli NFI - Nutrition Foundation of Italy, Milano
Cook N et al, BMJ, 2020
Dietary total fat, fatty acids intake, and risk of cardiovascular
  disease: a dose-response meta-analysis of cohort studies

                  Total fats

                                     0.97 (0.93-1.01)

                                         Zhu L et al, Lipid Health Dis 2019
Health effects of dietary risks in 195 countries, 1990–2017:
a systematic analysis for the Global Burden of Disease Study 2017

                               GBD 2017 Diet Collaborators, Lancet, 2019
Parallel declines in erythrocyte trans fatty acids
   and US fatal ischemic heart disease rates

  Rates of fatal ischemic heart disease in the United States between 2009 and 2016
  as a function of red blood cell levels of industrially produced trans fatty acids

                                                     Sala-Vila A et al, Nutr Res 2019
Average Intake of Trans Fatty Acids in Various Countries

          10

           8

           6

           4
           2

           0

       Intake of trans fatty acids with chain lengths of 16 or 18 carbon
       atoms in seven countries: assessment by chemical analysis in
           1987 of diet as reported in 1960 (De Vries et al. 1997).
                                                                           Zock 1997
June 12th, 2014
Dietary total fat, fatty acids intake, and risk of cardiovascular
   disease: a dose-response meta-analysis of cohort studies

SFA                                       Total fats

                                                                  0.97 (0.93-1.01)

                       0.97 (0.93-1.02)

                                              Zhu L et al, Lipid Health Dis 2019
Dietary fats and mortality among patients with type 2 diabetes:
         analysis in two population based cohort studies

Polyunsaturated Fatty Acids

Monounsaturated Fatty Acids

                                                Jiao J et al, BMJ 2019
Dietary fats and mortality among patients with type 2 diabetes:
        analysis in two population based cohort studies

Saturated Fatty Acids

Trans-unsaturated Fatty Acids

                                               Jiao J et al, BMJ 2019
Dietary fats and mortality among patients with type 2 diabetes:
        analysis in two population based cohort studies

                                               Jiao J et al, BMJ 2019
Circulating Saturated Fatty Acids and Incident Type 2
          Diabetes: A Systematic Review and Meta-Analysis

                                      Milk/dairy

                                      DNL

pentadecanoic acid (C15:0)

                                               palmitic acid (C16:0)

heptadecanoic acid (C17:0)
                                               Huang L et al, Nutrients 2019
Fontecha J et al, Adv Nutr 2019
APOA2 - 256T>C polymorphism interacts with SFA intake to affect
anthropometric and hormonal variables in type 2 diabetic patients

                                        Basiri MG et al, Nutr Genes 2015
APOA2 - 256T>C polymorphism interacts with SFA intake to affect
anthropometric and hormonal variables in type 2 diabetic patients

                                        Basiri MG et al, Nutr Genes 2015
Olio di oliva V/EV o “normale”

Major CVD events

                                 Guasch-Ferrè M et al, BMC Medicine 2014
Olio di oliva V/EV o “normale”

Major CVD events

                                 Guasch-Ferrè M et al, BMC Medicine 2014
Polyphenol intake and all-cause mortality
risk: a re-analysis of the PREDIMED trial

                                              -37%

                     Tresserra-Rimbau A et al, BMC Medicine 2014
Coffee consumption and all-cause and cause-specific
mortality: a meta-analysis by potential modifiers
  40 studies including 3,852,651 subjects and 450,256 all-cause and cause-specific deaths.

                                                           Kim Y et al, Eur J Epidemiol 2019
Chocolate and risk of chronic disease: a systematic
      review and dose response metanalysis
      type 2 diabetes mellitus   coronary heart disease

      stroke                     heart failure

                                    Morze J et al, Eur J Nutr 2019
Chocolate and risk of chronic disease: a systematic
      review and dose response metanalysis
      type 2 diabetes mellitus                coronary heart disease

                            Fondente
                            70% 25% zucchero
                            85% 12% zucchero
      stroke                                  heart failure
                            20 g  2,5-5,0 g zucchero

                                                 Morze J et al, Eur J Nutr 2019
Fruit and vegetable consumption and all-cause
 mortality: a dose response analysis in 71,000
           swedish men and women

            3 years of life less       Average follow-up: 13 yrs

                                    Frutti rossi!

                                   Bellavia A et al, Am J Clin Nutr 2013
Fresh fruit consumption in relation to incident diabetes and
              diabetic vascular complications:
   A 7-y prospective study of 0.5 million Chinese adults

                                             Du H et al, PLOS 2017
Dietary fibre and whole grains in diabetes
  management: systematic review and metanalysis

Dietary fibre intake and all-cause (left) and CVD mortality (right) in cohorts with type 1 or type 2 diabetes

                                                                        Reynolds AN et al, PLOS 2019
HR for all-cause death by Tertiles of
Carbohydrate Quality Index (CQI) in the SUN study

                        Fernandez-Lazaro CI et al, Clin Nutr 2020
Colesterolo dietetico: rispondiamo
      tutti allo stesso modo?

                            Effetto del
                            consumo di 4
                            uova al
                            giorno per 4
                            settimane,
                            sui lipidi e le
                            LPs, in
                            volontari IS,
                            IR ed OIR

IS   IR OIR   IS   IR OIR
                            Knopp, ATVB, 2003
Eggs, CVD, diabetes and all-cause mortality

                          Guo J et al, Eur J Nutr 2017
Conclusioni

La nutrizione attraversa una fase molto complessa
Le associazioni statistiche rilevate negli studi osservazionali
 sono soggette ad una rilettura critica molto attenta, che
 riserva sorprese importanti (sodio, saturi, carne rossa…)
Il dibattito scientifico, che assume talvolta toni del tutto
 irrituali, e la «vischiosità» delle posizioni di molti nutrizionisti
 di rango rallentano lo sviluppo di una vera Evidence Based
 Nutrition
Una maggiore focalizzazione sugli aspetti protettivi della
 dieta («positive nutrition»), rispetto a quelli meno favorevoli
 (specie grassi e zuccheri), prestando attenzione ad evitare
 l’aumento eccessivo di peso, sembra allo stato attuale, la
 scelta più ragionevole (anche nel diabetico?)
www.nutrition-foundation.it
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