I can't really speak for A level health and social care but i can speak for A level psychology. It really depends what you find hard, the maths content is less than what you would in a core science, however it can be quite word heavy. I personally love the subject however some people find this not quite as they expected. If you want a little insight into the course look at the past papers and stuff to see the question style and whether it suits you. For psychology i know you will have atleast two extended answer questions. Hope this helps.