Food Labeling. Percentages don't add up..
My doctor diagnosed "pre-diabetes" last year. He prescribed a CGM, and I have been controlling my blood sugar with diet. My average glucose for the past 90 days is 108, and I rarely spike over 150, My AIC was within normal range at my last check-up, so I guess I'm eating right.
I have a question about food labeling. I just looked at the carb content of several items in my pantry. They all list a grams per serving and percentage of RDA. But when I calculate the percentages, I get different RDA's. For example:
mix nuts: 7 grams = 3% (7 is 3% of 233)
peanut Butter: 7 grams, (7 is 2% of 350)
mozzarella cheese: 2 grams, 1% ( 2 is 1% of 200)
no sugar added pizza sauce: 5g, 2% ( 5 is 2% of 250)
canned kidney beans: 19g, 7% (19 is 7% of 271)
canned refritos: 15g, 5% ( 15 is 5% of 300)
"Palmini" spaghetti substitue: 4 g, 1% ( 4 is 1% of 400)
macaroni: 42g, 15% (42 1s 15% of 280)
I used the formula RDA = grams per serving/ percent RDA.
Example: Mix nuts =7g/0.03= 233g = RDA
Why is there such a difference? Why aren't the food manufacturer's using the same RDA? What is the real RDA?