Calcium Intake and Absorption Factors

The video discusses the importance of calcium in the body, highlighting its structural role in bones and teeth, and its functional roles in muscle contraction, nerve transmission, and blood clotting. It explains how calcium levels are regulated by hormones and the consequences of both deficiency and excess intake. The video also covers dietary sources of calcium, factors affecting its absorption, and the risks associated with high calcium intake.

What is one of the first symptoms of suboptimal calcium intake?

• Enhanced concentration

• Restlessness and agitation

• Improved sleep quality

• Increased appetite

What percentage of the body's calcium is found in bones and teeth?

• 75%

• 99%

• 50%

• 90%

Which hormone is NOT involved in calcium homeostasis?

• Parathyroid hormone

• Insulin

• Calcitriol

• Calcitonin

What is the recommended daily allowance (RDA) of calcium for women over 50?

• 1 gram

• 0.8 grams

• 1.5 grams

• 1.2 grams

Which dietary factor can decrease calcium absorption?

• High fruit consumption

• Low protein diet

• High vitamin C intake

• Phytate from whole grains

Which of the following is a good plant-based source of calcium?

• Spinach

• Bok choy

• White rice

• Chocolate

What is a potential consequence of excessive calcium intake?

• Enhanced vitamin D activation

• Improved bone density

• Reduced risk of kidney stones

• Calcification of soft tissues

Which mineral's absorption is affected by high calcium intake?

• Potassium

• Zinc

• Sodium

• Magnesium

What is the effect of caffeine on calcium levels?

• Increases calcium excretion

• Increases calcium absorption

• Decreases calcium excretion

• Has no effect on calcium

Which of the following foods is often fortified with calcium?

• Olive oil

• Orange juice

• Whole grain bread

• Red meat