“I take 20 mg Cialis pill and it works as expected but after sexual intercourse I sometimes feel muscle pain in the back and fatigue. I do not know if this is because I work like a stud or it is a side effect. Anyway I am lucky that I gave it a try.”

I have tried Viagra and Cialis before and must say that Levitra causes less side effects though. I had terrible headache with Viagra which made sex impossible sometimes. With Levitra I forgot about it. I would recommend it to anybody who has similar problems ...

Saskia Reeves-Priestley didn't know she had a Vitamin D deficiency until she suddenly collapsed at work.

Chomping on vegtable skins, seeds and stalks could give us vital fibre, say food scientists.

Doctors are finding vitamin D deficiency is increasingly widespread in the UK, especially in young people. But the symptoms are difficult to spot and can be missed.

It will cause huge disruption in some parts of England and Wales, say GP leaders.