Solution:

Try:

{{ Form::label('penyakit-0', 'Asma') }}
{{ Form::radio('penyakit', 'Asma', false, array('id'=>'penyakit-0')) }}

Edit:

As Phil Gyford pointed out above, this Laravel blade snippet doesn’t yield a label element with an embedded input element.

Unfortunately (or fortunately) by design design Laravel blade opted for the alternate construction using for attribute for some reason.