People with Down syndrome usually have mild to moderate intellectual delay. They will learn over their lifetime, however, the rate at which they learn will be slower than an average individual. Their learning will continue to be behind people their own age for their entire life. People with Down syndrome are more likely to have health problems than the average person like heart, stomach, bowel, thyroid, vision and hearing difficulties. Treatment is available for many of these health conditions.
People with Down syndrome generally live into their fifties. Each person with Down syndrome is different. There is no way to test how serious the disabilities will be.