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Medical / Dietary Needs

What you need to know



  • High calcium levels can be found in individuals with Williams syndrome, usually in infancy. In some individuals this can recur in childhood or even adulthood.
  • High calcium levels can also occur in the urine and cause kidney stones.
  • Hypothyroidism, or low thyroid hormone levels, occurs at an increased frequency in Williams syndrome.
  • Diabetes occurs more frequently in Williams syndrome.
  • Ongoing evaluations by a cardiologist may be necessary in some children for monitoring.


  • Most children with Williams syndrome do not require any special diet, but may be on a reduced calcium diet.
  • A well-balanced diet and exercise is important to reduce the risk of diabetes.
  • Gastroesophageal reflux may be present.
  • Chronic constipation is common.
  • Sensitivity to textures and tastes as well as poor motor control may make mealtimes challenging.

What you can do

  • Be aware, or ask a parent, if the child has a medical alert bracelet.
  • Talk with the parents about their child’s individual medical needs
  • Alert the parents about any changes in activity level
  • Alert the parents about any changes in bathroom or eating habits
  • Screen vision and hearing regularly