Some foods can block calcium absorption

potatoes do not block calcium absorption. However, potatoes are not a significant source of calcium or vitamin D, which are important for bone health. 

 

 

Some foods that can block calcium absorption include:

• Foods with oxalates: Oxalates bind with calcium in the same food, preventing the body from absorbing the calcium. Foods with oxalates include spinach, rhubarb, and sweet potatoes. 
   
   
• Foods with phytates: Phytates are found in whole grains, legumes, nuts, and soy products, and bind calcium in other foods. However, cooking phytate-containing foods can reduce their phytic acid content and make the nutrients more bioavailable. 
   
   
• Caffeine and phosphorus: These can reduce calcium absorption. 
   
   
• Alcohol: Alcohol can interfere with the pancreas and liver, which are needed to activate and absorb calcium. 
   
   
• Salty foods: Excessively salty foods can leach calcium from the body.