Drinking tea or coffee with meals can reduce the amount of iron (needed for red blood cells) and zinc (needed for immunity), the food we eat and supplements you take with your meals to absorb. This is because the tea and coffee contain caffeine and tannins.
Coffee has more caffeine than tea (real) tea of coffee have more tannins. Besides water, tea is the most popular drink in the world (green is the most common form).
What distinguishes the categoriesThe tea is their degree of oxidation (which is the process which interacts with oxygen and the tea leaf is dark). Black tea is oxidized, Oolong tea is semi-oxidized, and green tea is not oxidized. All true tea leaves of Camellia sinensis ("tea plant") and then come to the process, not leaves, which is to determine the category of tea, the same plant can produce all three types of tea too. Rooibos, known as "red tea", is a herbal tea instead of tea, and comes from the leaves of aAfrican bush legume. Red Tea contains no caffeine or tannins. Herbal tea is not technically a tea, but it is by soaking flowers, roots, leaves and bark of another plant such as the tea plant.
Tannins are polyphenols (antioxidants of plant origin). The tannins are positive contributions, such as inhibiting the growth of plaque, but inhibit the absorption of iron, calcium and zinc and digest because the protein binding, are reduced to a person's ability to assimilate andProteins. Note that only the shape of tannins inhibit non-heme (plant origin) of iron, non-heme form (the most iron supplements are derived from plants). Since vitamin C helps to neutralize the tannins "effects on iron absorption by adding lemon juice to the tea, the negative effect of tannins in iron absorption is reduced (or orange juice can be a meal in the morning add). Although rooibos contains a small amount of tannin, the amount is so small that it does not affect iron absorption
Caffeine canthe absorption of manganese, zinc, copper, iron, magnesium, vitamin A and B vitamins decrease a lot. According to a 2002 study from Tufts University in coffee can inhibit iron absorption up to 87% when consumed, or until one hour after meals.
The caffeine content of coffee and tea are estimated:
Double espresso (2 oz) = 45-100 mg
Brewed coffee (8 oz) 60-120 mg =
Instant coffee (8 oz) = 70 mg
Decaffeinated coffee (8 ounces) = 5.1 mg
Black Tea (8 oz) = 45mg
Oolong Tea (8 oz) = 30 mg
Green Tea (8 oz) = 20 mg
White Tea (8 oz) = 15 mg
Rooibos (8 oz) = 0 mg
Herbal Tea (8 oz) = 0 mg
Does not mean that you will give your coffee or tea (unless you choose otherwise). What you should do is to avoid drinking anything with caffeine or tannins for at least 30 minutes after eating or minerals (and waiting for a full hour will make sure you get the most out of your dietMeals). Use organic coffee and tea to prevent the importation of pesticides, herbicides and chemical fertilizers.
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