Besides creating major hormonal imbalances in the body, caffeine also
impairs calcium absorption.
Older adults also are more likely to have chronic medical problems and to use medications that may
impair calcium absorption.
This is also something to consider if you like making green smoothies — I tend to avoid putting dairy in a green smoothie since the calcium can interfere with iron absorption, and some of the compounds in the greens can
impair calcium absorption, so it's a lose - lose situation.
Not exact matches
Oats contain phytic acid, which
impairs the
absorption of iron, zinc,
calcium, and more, and blocks the production of digestive enzymes, making your oats much harder on your stomach.
ENEMIES: Excessive
calcium impairs zinc levels, as they both compete for
absorption.
You want to decrease phytic acid in foods you consume as much as possible because it
impairs the
absorption of a number of minerals, including zinc,
calcium, and iron (although it's to be noted that the impairment only happens during that meal, not at subsequent meals).
With clients and readers, and in my research, I have consistently found medications and supplements that suppress stomach acid may cause
impaired absorption of thyroid hormones, and that includes the above proton pump inhibitors, as well as antacids,
calcium, magnesium - aluminum and iron.
Chronic antacid use also
impairs absorption of minerals, including
calcium, which can increase the risk of osteoporosis and fractures.
Several natural thyroid drug manufacturers were also contacted, and while they refused to go on the record publically, they concurred that sublingual administration of natural desiccated thyroid does not prevent other substances such as iron,
calcium, fiber, and coffee from
impairing absorption.