The Register's readers are talking about causes of cancer, the meaning of freedom and the Trump administration in letters ...

I am 54 and have dizzy spells and heart palpitations when I stand up. I was prescribed beta blockers but these didn't help. What could be the problem?

Chronic absenteeism — defined by the U.S. Department of Education as missing 10% or more of the school year — has emerged as one of the most persistent and complex challenges facing public education ...