Grassi Del Cocco

[Gawain]

http://www.albanesi.it/alimentazione/grassisaturi.htm

[max_power]

quindi non conta niente per te quell'articolo.....bene.
che ti devo dire,io sto bene anche prediligendo i saturi e quell'articolo l'ho trovato interessante e le esperienze dirette e le statistiche mi interessano tanto quanto gli studi.

ps: puoi tradurre?

Per carità, l'articolo è interessantissimo non lo metto in dubbio.

Non capisco però cosa vuoi dire con: io sto bene anche prediligendo i saturi, ci mancherebbe che alla tua età (grassi saturi o non) avresti problemi...

max_power

[tartufone]

perchè non si fà altro che dire che i saturi fanno male...

[dago85]

no fanno male, ma penso si debba regolare l'assunzione, no eliminarli del tutto..

[max_power]

perchè non si fà altro che dire che i saturi fanno male...

Tutto fa male e niente fa male.

max_power

[tartufone]

no fanno male, ma penso si debba regolare l'assunzione, no eliminarli del tutto..

ma dai

[tartufone]

Tutto fa male e niente fa male.

max_power

.

[ct-7b]

Un articolo non supportato da studi scientifici, niente bibliografia, niente di niente.
Io invece faccio riferimento a questi:

• Denke MA.

710 Water Street, Suite 604, Kerrville, TX 78883, USA. mdenke@ktc.com.


All saturated fatty acids, with the notable exception of stearic acid (C18:0), raise low-density lipoprotein (LDL) cholesterol levels. A few less ubiquitous fatty acids also have LDL cholesterol effects. Trans-monounsaturated fatty acids, at equivalent doses of saturated fatty acids, raise LDL cholesterol. Polyunsaturated fatty acids, at three times the dose of saturated fatty acids, lower LDL cholesterol. Higher intakes of most fatty acids raise high-density lipoprotein (HDL) cholesterol, with the notable exception of trans-monounsaturated fatty acids, which lower HDL cholesterol to the same extent as carbohydrate when either is substituted for other dietary fatty acids. Conjugated linoleic acids containing both cis and trans bonds and cis-monounsaturated fatty acids neither raise nor lower cholesterol concentrations of lipoproteins. The omega-3 fatty acids from fish lower triglyceride levels. Although dietary composition remains an important, modifiable predictor of dyslipidemia, overconsumption of any form of dietary energy may replace overconsumption of saturated fat as the primary factor that increases lipid and lipoprotein levels.


PMID: 17045072

i saturi alzano il colesterolo...nulla da ribadire, ma alzano il colesterolo TOTALE, ciò vuole dire che il rapporto HDL/LDL rimane invariato. In soggetti sani, che nn hanno mutazione nel gene che codifica l'espressione di alcuni recettori sulla superficie cellulare epatica, deputati al legame con le LDL e lo smaltimento/trasporto (via HDL) del colesterolo ciò nn è un problema se il rapporto HDL/LDL rimane costante e positivo...solo i trans grassi tendono ad abbassare l' HDL e, se nn ricordo male, anche l'acido grasso saturo palmitico...

[max_power]

i saturi alzano il colesterolo...nulla da ribadire, ma alzano il colesterolo TOTALE, ciò vuole dire che il rapporto HDL/LDL rimane invariato. In soggetti sani, che nn hanno mutazione nel gene che codifica l'espressione di alcuni recettori sulla superficie cellulare epatica, deputati al legame con le LDL e lo smaltimento/trasporto (via HDL) del colesterolo ciò nn è un problema se il rapporto HDL/LDL rimane costante e positivo...solo i trans grassi tendono ad abbassare l' HDL e, se nn ricordo male, anche l'acido grasso saturo palmitico...

Lo studio questo non lo dice. Afferma solo l'incremento delle LDL ad opera dei grassi saturi.

[ct-7b]

Lo studio questo non lo dice. Afferma solo l'incremento delle LDL ad opera dei grassi saturi.

"Higher intakes of most fatty acids raise high-density lipoprotein (HDL) cholesterol, with the notable exception of trans-monounsaturated fatty acids, which lower HDL cholesterol to the same extent as carbohydrate when either is substituted for other dietary fatty acids."

[max_power]

"Higher intakes of most fatty acids raise high-density lipoprotein (HDL) cholesterol, with the notable exception of trans-monounsaturated fatty acids, which lower HDL cholesterol to the same extent as carbohydrate when either is substituted for other dietary fatty acids."

Nessuno lo mette in dubbio, è proprio quello che dice lo studio. Ma lo studio in questione non specifica le quantità per cui tali grassi potrebbero promuovere l'effetto che tu hai detto. Dice solo: " Higher intakes", quindi assunzioni più alte. A mio parere il rapporto HDL/LDL dipende anche dalla quantità di lipidi che si assumono col la dieta.

max_power

[ct-7b]

Stearic acid, trans fatty acids, and dairy fat: effects on serum and lipoprotein lipids, apolipoproteins, lipoprotein(a), and lipid transfer proteins in healthy subjects.

• Aro A,
• Jauhiainen M,
• Partanen R,
• Salminen I,
• Mutanen M.

Department of Nutrition, National Public Health Institute, Helsinki, Finland. Antti.Aro@ktl.fi
To compare the effects on serum lipoproteins of stearic acid, trans fatty acids, and dairy fat, 80 healthy subjects consumed a dairy fat-based (baseline) diet for 5 wk, then an experimental diet high in either trans fatty acids (8.7% of energy; n = 40) or stearic acid (9.3% of energy; n = 40) for another 5 wk. All diets provided 32.2-33.9% of energy as fat, 14.6-15.8% as saturated plus trans fatty acids, 11.4-12.5% as cis-monounsaturated fatty acids, 2.9-3.5% as polyunsaturated fatty acids, and 200-221 mg cholesterol/10 MJ. Compared with the dairy fat diet, stearic acid and trans fatty acids decreased serum total cholesterol concentrations similarly (by 13% and 12%, respectively, P < 0.001) but the trans fatty acid diet decreased HDL cholesterol (17%) and apolipoprotein (apo) A-I (15%) significantly more than did the stearic acid diet (11% and 12%, respectively). Stearic acid but not trans fatty acids reduced concentrations of LDL cholesterol and apo B significantly (P < 0.001). The trans fatty acid diet increased the ratio of LDL to HDL cholesterol (19%) and of apo B to apo A-I (16%) more than did the dairy fat diet (P < 0.001) but the stearic acid diet had no effect. Lipoprotein(a) concentrations increased with both experimental diets, significantly more with trans fatty acids (30%) than with stearic acid (10%). In conclusion, high amounts of trans fatty acids had more adverse effects on lipoproteins than did equal amounts of stearic acid and dairy fat. Stearic acid reduced LDL cholesterol, did not affect the ratio of LDL to HDL cholesterol, and increased lipoprotein(a), although to a lesser extent than did trans fatty acids. Dietary fats low in both saturated fatty acids and trans fatty acids should be favored.



Comparison of the effects of diets enriched in lauric, palmitic, or oleic acids on serum lipids and lipoproteins in healthy women and men.

• Temme EH,
• Mensink RP,
• Hornstra G.

Department of Human Biology, University of Limburg, Maastricht, Netherlands.
The degree to which different saturated fatty acids exert their cholesterol-raising effects is still unknown. Therefore, we studied the effect on serum lipids and lipoproteins of diets rich in lauric, palmitic, or oleic acids. Eighteen women and 14 men consumed in random order three experimental diets, each for 6 wk. The diets consisted of solid foods and contained 40% of energy as fat, of which 28% was supplied by the experimental fats. The fat high in lauric acid was a mixture of palm kernel oil (75%) and a high-oleic acid sunflower oil (25%); the fat high in palmitic acid consisted of dairy fat (55%), palmstearin (36%), and sunflower oil (9%); and the fat high in oleic acid consisted of dairy fat (37%) and sunflower oil (63%). The calculated nutrient composition was the same in each diet except for approximately equal to 8.5% of energy, which was provided by lauric, palmitic, or oleic acids. With the lauric acid diet the subjects' serum total cholesterol concentration increased by 0.22 mmol/L (P = 0.0121; 95% CI: 0.02, 0.41 mmol/L) as compared with the palmitic acid diet and by 0.48 mmol/L (P < 0.0001; 95% CI: 0.29, 0.67 mmol/L) compared with the oleic acid diet. Total cholesterol concentrations with the palmitic acid diet were 0.26 mmol/L (P = 0.0012; 95% CI: 0.07, 0.46 mmol/L) higher than with the oleic acid diet. High-density-lipoprotein (HDL)-cholesterol concentrations increased by 0.12 mmol/L (P = 0.006; 95% CI: 0.04, 0.20 mmol/L) with the lauric acid compared with the palmitic acid diet and by 0.14 mmol/L (P < 0.001; 95% CI: 0.07, 0.22 mmol/L) compared with the oleic acid diet. HDL-cholesterol concentrations with the palmitic acid and the oleic acid diet were the same. No effects were seen in serum triacylglycerol and lipoprotein(a) concentrations. We conclude that both lauric and palmitic acids are hypercholesterolemic compared with oleic acid. Lauric acid raises total cholesterol concentrations more than palmitic acid, which is partly due to a stronger rise in HDL cholesterol.

[max_power]

Grazie. Studi già visionati comunque, ma potrebbero essere utili al web