Nine out often asthma attacks are triggered by allergic reactions. Angela Rippon reports on a new vaccine that may soon give sufferers protection, and sees how it has allowed one woman to finally live with cats. Plus a look at how hip replacements can help improve sporting performance, and the latest in dentistry: a white filling as strong as natural teeth that will last a lifetime. Presented by Alice Beer with Dr Mark Porter.
(Digital widescreen) (Subtitled)
See Dr Mark Porter: page 31