1. A method of rating food, comprising the steps of: (a) calculating a first factor FF that represents an estimate of the satiating effect of a food according to the relationship: 
 FF=max(FFMIN,min(FFMAX, C 00 
 +C01*max(CALMIN,CAL)^E01 
 +C02*min(PRMAX,PR)^E02 
 +C03*min(DFMAX,DF)^E03 
 +C04*min(TFMAX,TF)^E04)) where: max(CALMIN,CAL) is a function that returns the maximum of either CALMIN or CAL, min(PRMAX,PR) is a function that returns the minimum of either PRMAX or PR, min(DFMAX,DF) is a function that returns the minimum of either DFMAX or DF, min(TFMAX,TF) is a function that returns the minimum of either TFMAX or TF, max(FFMIN,min(FFMAX,C00+C01*max(CALMIN,CAL)^E1+C02*min(PRMAX,PR)^E02+C03*min(DFMAX,DF)^E03+C04*min(TFMAX,TF)^E04)) is a function that returns the maximum of either (i) FFMIN or (ii) the function that returns the minimum of either FFMAX or the quantity C00+C01*max(CALMIN,CAL)^E01+C02*min(PRMAX,PR)^E02+C03*min(DFMAX,DF)^E03+C04*min(TFMAX,TF)^04 CAL is total Calories per 100 gram portion of the food, PR is grams of Protein per 100 g, DF is grams Dietary Fiber per 100 g, and TF is grams total Fat per 100 g; FFMIN, FFMAX, CALMIN, PRMAX, DFMAX, TFMAX, and C00 are constants, C01 through C04 are coefficients, and E01 through E04 are exponential powers having the approximate following values: FFMIN=0.5 FFMAX=5.0 CALMIN=30 DFMAX=12 C03=1/1620 C04=−1/138,000 E02=1.0 E04=3.0; (b) calculating a second factor NDR that represents the nutritional benefit of said food according to the relationship: 
 NDR=max( R MIN,min( R MAX, C 00 
 +C01*(ln(max(PMIN,min(PMAX,100*DF0/DF1)))−ln(PAVG)) 
 +C02*(ln(max(PMIN,min(PMAX,100*PR0/PR1)))−ln(PAVG)) 
 +C03*(ln(max(PMIN,min(PMAX,100*VA0/VA1)))−ln(PAVG)) 
 +C04*(ln(max(PMIN,min(PMAX,100*VC0/VC1)))−ln(PAVG)) 
 +C05*(ln(max(PMIN,min(PMAX,100*CA0/CA1)))−ln(PAVG)) 
 +C06*(ln(max(PMIN,min(PMAX,100*FE0/FE1)))−ln(PAVG)) 
 +C07*(ln(max(PMIN,min(PMAX,100*VD0/VD1)))−ln(PAVG)) 
 +C08*(ln(max(PMIN,min(PMAX,100*VE0/VE1)))−ln(PAVG)) 
 +C09*(ln(max(PMIN,min(PMAX,100*VK0/VK1)))−ln(PAVG)) 
 +C10*(ln(max(PMIN,min(PMAX,100*TH0/TH1)))−ln(PAVG)) 
 +C11*(ln(max(PMIN,min(PMAX,100*RI0/RI1)))−ln(PAVG)) 
 +C12*(ln(max(PMIN,min(PMAX,100*NI0/NI1)))−ln(PAVG)) 
 +C13*(ln(max(PMIN,min(PMAX,100*VB60/VB61)))−ln(PAVG)) 
 +C14*(ln(max(PMIN,min(PMAX,100*FO0/FO1)))−ln(PAVG)) 
 +C15*(ln(max(PMIN,min(PMAX,100*VB120/VB121)))−ln(PAVG)) 
 +C16*(ln(max(PMIN,min(PMAX,100*PA0/PA1)))−ln(PAVG)) 
 +C17*(ln(max(PMIN,min(PMAX,100*MG0/MG1)))−ln(PAVG)) 
 +C18*(ln(max(PMIN,min(PMAX,100*P0/P1)))−ln(PAVG)) 
 +C19*(ln(max(PMIN,min(PMAX,100*K0/K1)))−ln(PAVG)) 
 +C20*(ln(max(PMIN,min(PMAX,100*ZN0/ZN1)))−ln(PAVG)) 
 +C21*(ln(max(PMIN,min(PMAX,100*CU0/CU1)))−ln(PAVG)) 
 +C22*(ln(max(PMIN,min(PMAX,100*MN0/MN1)))−ln(PAVG)) 
 +C23*(ln(max(PMIN,min(PMAX,100*SE0/SE1)))−ln(PAVG)) 
 +C24*(ln(max(PMIN,min(PMAX,100*SF0/SF1)))−ln(PAVG)) 
 +C25*(ln(max(PMIN,min(PMAX,100*CH0/CH1)))−ln(PAVG)) 
 +C26*(ln(max(PMIN,min(PMAX,100*NA0NA1)))−ln(PAVG)) 
 +C27*(ln(max(PMIN,min(PMAX,100*SA0/SA1)))−ln(PAVG)))) where: ln is the natural (base e) logarithm, max(PMIN,min(PMAX,100*DF0/DF1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*DF0/DF1, max(PMIN min(PMAX,100*PR0/PR1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*PR0/PR1, max(PMIN min(PMAX,100*VA0/VA1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VA0/VA1, max(PMIN,min(PMAX,100*VC0/VC1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VC0/VC1, max(PMIN,min(PMAX,100*CA0/CA1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*CA0/CA1, max(PMIN,min(PMAX,100*FE0/FE1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*FE0/FE1, max(PMIN min(PMAX,100*VD0/VD1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VD0/VD1, max(PMIN,min(PMAX,100*VE0/VE1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VE0/VE1, max(PMIN,min(PMAX,100*VK0/VK1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VK0/VK1, max(PMIN,min(PMAX,100*TH0/TH1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*TH0/TH1, max(PMIN,min(PMAX,100*RI0/RI1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*RI0/RI1, max(PMIN,min(PMAX,100*NI0/NI1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*NI0/NI1, max(PMIN,min(PMAX,100*VB60/VB61)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VB60/VB61, max(PMIN,min(PMAX,100*FO0/FO1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*FO0/FO1, max(PMIN,min(PMAX,100*VB120/VB121)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*VB120/VB121, max(PMIN,min(PMAX,100*PA0/PA1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*PA0/PA1, max(PMIN,min(PMAX,100*MG0/MG1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*MG0/MG1, max(PMIN,min(PMAX,100*P0/P1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*P0/P1, max(PMIN,min(PMAX,100*K0/K1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*K0/K1, max(PMIN,min(PMAX,100*ZN0/ZN1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*ZN0/ZN1, max(PMIN,min(PMAX,100*CU0/CU1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*CU0/CU1, max(PMIN,min(PMAX,100*MN0/MN1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*MN0/MN1, max(PMIN,min(PMAX,100*SE0/SE1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*SE0/SE1, max(PMIN,min(PMAX,100*SF0/SF1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*SF0/SF1, max(PMIN,min(PMAX,100*CH0/CH1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*CH0/CH1, max(PMIN,min(PMAX,100*NA0/NA1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*NA0/NA1, max(PMIN,min(PMAX,100*SA0/SA1)) is a function that returns the maximum of either (i) PMIN or (ii) the function that returns the minimum of either PMAX or 100*SA0/SA1, max(RMIN,min(RMAX,C00+C01*(ln(max(PMIN,min(PMAX,100*DF0/DF1)))−ln(PAVG))+C02*(ln(max(PMIN,min(PMAX,100*PR0/PR1)))−ln(PAVG))+C03*(ln(max(PMIN,min(PMAX,100*VA0/VA1)))−ln(PAVG))+C04*(ln(max(PMIN,min(PMAX,100*VC0/VC1)))−ln(PAVG))+C05*(ln(max(PMIN,min(PMAX,100*CA0/CA1)))−ln(PAVG))+C06*(ln(max(PMIN,min(PMAX,100*FE0/FE1)))−ln(PAVG))+C07*(ln(max(PMIN,min(PMAX,100*VD0/VD1)))−ln(PAVG))+C08*(ln(max(PMIN,min(PMAX,100*VE0/VE1)))−ln(PAVG))+C09*(ln(max(PMIN,min(PMAX,100*VK0/VK1)))−ln(PAVG))+C10*(ln(max(PMIN,min(PMAX,100*TH0/TH1)))−ln(PAVG))+C11*(ln(max(PMIN,min(PMAX,100*RI0/RI1)))−ln(PAVG))+C12*(ln(max(PMIN,min(PMAX,100*NI0/NI1)))−ln(PAVG))+C13*(ln(max(PMIN,min(PMAX,100*VB60/VB61)))−ln(PAVG))+C14*(ln(max(PMIN,min(PMAX,100*FO0/FO1)))−ln(PAVG))+C15*(ln(max(PMIN,min(PMAX,100*VB120/VB121)))−ln(PAVG))+C16*(ln(max(PMIN,min(PMAX,100*PA0/PA1)))−ln(PAVG))+C17*(ln(max(PMIN,min(PMAX,100*MG0/MG1)))−ln(PAVG))+C18*(ln(max(PMIN,min(PMAX,100*P0/P1)))−ln(PAVG))+C19*(ln(max(PMIN,min(PMAX,100*K0/K1)))−ln(PAVG))+C20*(ln(max(PMIN,min(PMAX,100*ZN0/ZN1)))−ln(PAVG))+C21*(ln(max(PMIN,min(PMAX,100*CU0/CU1)))−ln(PAVG))+C22*(ln(max(PMIN,min(PMAX,100*MN0/MN1)))−ln(PAVG))+C23*(ln(max(PMIN,min(PMAX,100*SE0/SE1)))−ln(PAVG))+C24*(ln(max(PMIN,min(PMAX,100*SF0/SF11)))−ln(PAVG))+C25*(ln(max(PMIN,min(PMAX,100*CH0/CH1)))−ln(PAVG))+C26*(ln(max(PMIN,min(PMAX,100*NA0/NA1)))−ln(PAVG))+C27*(ln(max(PMIN,min(PMAX,100*SA0/SA1)))−ln(PAVG)))) is a function that returns the maximum of either (i) RMIN or (ii) the function that returns the minimum of either RMAX or the quantity C00+C01*(ln(max(PMIN,min(PMAX,100*DF0/DF1)))−ln(PAVG))+C02*(ln(max(PMIN,min(PMAX,100*PR0/PR1)))−ln(PAVG))+C03*(ln(max(PMIN,min(PMAX,100*VA0/VA1)))−ln(PAVG))+C04*(ln(max(PMIN,min(PMAX,100*VC0/VC1)))−ln(PAVG))+C05*(ln(max(PMIN,min(PMAX,100*CA0/CA1)))−ln(PAVG))+C06*(ln(max(PMIN,min(PMAX,100*FE0/FE1)))−ln(PAVG))+C07*(ln(max(PMIN,min(PMAX,100*VD0/VD1)))−ln(PAVG))+C08*(ln(max(PMIN,min(PMAX,100*VE0/VE1)))−ln(PAVG))+C09*(ln(max(PMIN,min(PMAX,100*VK0/VK1)))−ln(PAVG))+C10*(ln(max(PMIN,min(PMAX,100*TH0/TH1)))−ln(PAVG))+C11*(ln(max(PMIN,min(PMAX,100*RI0/RI1)))−ln(PAVG))+C12*(ln(max(PMIN,min(PMAX,100*NI0/NI1)))−ln(PAVG))+C13*(ln(max(PMIN,min(PMAX,100*VB60/VB61)))−ln(PAVG))+C14*(ln(max(PMIN,min(PMAX,100*FO0/FO1)))−ln(PAVG))+C15*(ln(max(PMIN,min(PMAX,100*VB120/VB121)))−ln(PAVG))+C16*(ln(max(PMIN,min(PMAX,100*PA0/PA1)))−ln(PAVG))+C17*(ln(max(PMIN,min(PMAX,100*MG0/MG1)))−ln(PAVG))+C18*(In(max(PMIN,min(PMAX,100*P0/P1)))−ln(PAVG))+C19*(ln(max(PMIN,min(PMAX,100*K0/K1)))−ln(PAVG))+C20*(ln(max(PMIN,min(PMAX,100*ZN0/ZN1)))−ln(PAVG))+C21*(ln(max(PMIN,min(PMAX,100*CU0/CU1)))−ln(PAVG))+C22*(ln(max(PMIN,min(PMAX,100*MN0/MN1)))−ln(PAVG))+C23*(ln(max(PMIN,min(PMAX,100*SE0/SE1)))−ln(PAVG))+C24*(ln(max(PMIN,min(PMAX,100*SF0/SF1)))−ln(PAVG))+C25*(ln(max(PMIN,min(PMAX,100*CH0/CH1)))−ln(PAVG))+C26*(ln(max(PMIN,min(PMAX,100*NA0/NA1)))−ln(PAVG))+C27*(ln(max(PMIN,min(PMAX,100*SA0/SA1)))−ln(PAVG)) DF0 is the amount of Dietary Fiber present in a serving, DF1 is the amount of Dietary Fiber specified as the Daily Value by the US FDA; PR0 is the amount of Protein present in a serving; PR1 is the amount of Protein specified as the Daily Value by the US FDA; VA0 is the amount of Vitamin A present in a serving; VA1 is the amount of Vitamin A specified as the Daily Value by the US FDA; VC0 is the amount of Vitamin C present in a serving; VC1 is the amount of Vitamin C specified as the Daily Value by the US FDA; CA0 is the amount of Calcium present in a serving; CA1 is the amount of Calcium specified as the Daily Value by the US FDA; FE0 is the amount of Iron present in a serving; FE1 is the amount of Iron specified as the Daily Value by the US FDA; VD0 is the amount of Vitamin D present in a serving; VD1 is the amount of Vitamin D specified as the Daily Value by the US FDA; VE0 is the amount of Vitamin E present in a serving; VE1 is the amount of Vitamin E specified as the Daily Value by the US FDA; VK0 is the amount of Vitamin K present in a serving; VK1 is the amount of Vitamin K specified as the Daily Value by the US FDA; TH0 is the amount of Thiamin present in a serving; TH1 is the amount of Thiamin specified as the Daily Value by the US FDA; RI0 is the amount of Riboflavin present in a serving; RI1 is the amount of Riboflavin specified as the Daily Value by the US FDA; NI0 is the amount of Niacin present in a serving; NI1 is the amount of Niacin specified as the Daily Value by the US FDA; VB60 is the amount of Vitamin B6 present in a serving; VB61 is the amount of Vitamin B6 specified as the Daily Value by the US FDA; FO0 is the amount of Folate present in a serving; FO1 is the amount of Folate specified as the Daily Value by the US FDA; VB120 is the amount of Vitamin B12 present in a serving; VB121 is the amount of Vitamin B12 specified as the Daily Value by the US FDA; PA0 is the amount of Pantothenic Acid present in a serving; PA1 is the amount of Pantothenic Acid specified as the Daily Value by the US FDA; MG0 is the amount of Magnesium present in a serving; MG1 is the amount of Magnesium specified as the Daily Value by the US FDA; P0 is the amount of Phosphorus present in a serving; P1 is the amount of Phosphorus specified as the Daily Value by the US FDA; K0 is the amount of Potassium present in a serving; K1 is the amount of Potassium specified as the Daily Value by the US FDA; ZN0 is the amount of Zinc present in a serving; ZN1 is the amount of Zinc specified as the Daily Value by the US FDA; CU0 is the amount of Copper present in a serving; CU1 is the amount of Copper specified as the Daily Value by the US FDA; MN0 is the amount of Manganese present in a serving; MN1 is the amount of Manganese specified as the Daily Value by the US FDA; SE0 is the amount of Selenium present in a serving; SE1 is the amount of Selenium specified as the Daily Value by the US FDA; SF0 is the amount of Saturated Fat present in a serving; SF1 is the amount of Saturated Fat specified as the Daily Value by the US FDA; CH0 is the amount of Cholesterol present in a serving; CH1 is the amount of Cholesterol specified as the Daily Value by the US FDA; NA0 is the amount of Sodium present in a serving; NA1 is the amount of Sodium specified as the Daily Value by the US FDA; SA0 is the number of Calories in a serving from sugars (as reported on Nutrition Facts labels) and alcohol; and SA1 is the total number of Calories in a serving; wherein: RMIN, RMAX, PMIN, PMAX, PAVG, and C00 are constants, C01 thru C27 are coefficients that weight the effects of the individual nutrients on the NDR; and wherein these constants and coefficients have the following approximate values: RMIN=0.0 RMAX=5.0 PMAX=40 C00=3.0 C01=0.238 C02=0.238 C03=0.238 C04=0.238 C05=0.238 C06=0.238 C07=0.0238 C08=0.0238 C09=0.0238 C10=0.0238 C11=0.0238 C12=0.0238 C13=0.0238 C14=0.0238 C15=0.0238 C16=0.0238 C17=0.0238 C18=0.0238 C19=0.0238 C20=0.0238 C21=0.0238 C22=0.0238 C23=0.0238 C24=−0.238 C25=−0.238 C26=−0.238 C27=−0.238; and (c) providing to a user a guideline using said first and second factors to enable food selection in accordance with at least one dietary goal; wherein at least one of steps (a) and (b) is effected using a suitably programmed computer.