No glycemic index number is listed for this food yet.
Health Benefits:
A drained can is high in vitamin B12, which contributes to normal red blood cell formation, and in selenium, which contributes to the normal function of the immune system.
Eaten with the bones, it is also high in calcium, phosphorus and vitamin D, three nutrients the EU links to the maintenance of normal bones.
It carries about 900 mg of the omega-3 fats EPA and DHA, and the EU ties 250 mg of the two a day to the normal function of the heart (Regulation (EU) No 432/2012).
Mercury: sardines sit in the lowest-mercury group of the FDA and EPA fish advice, but as an oily fish they carry more dioxins, so the UK advises girls and women who may have a child to keep oily fish to 2 portions a week (NHS).
The can: canned fish is one route for BPA from can linings, and a can adds about 280 mg of sodium.
Tells you how big that rise actually is once portion size is factored in.
Example:
Watermelon has a high GI (it digests quickly) but a low GL because a normal serving doesn’t contain many carbs so the actual blood-sugar impact is small.
Why it matters:
Understanding both GI and GL gives you a clearer picture of how foods affect your blood sugar both the speed of the rise and the true impact based on the portion you eat.