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
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
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 (
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
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
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
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
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
… 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.
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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