I'm 34. I'm coming to the end of my medical training and quite frankly despite the fact that I love my job and am looking forward to becoming a Consultant there is no way in hell I would contemplate entering training now to be a doctor.
If your friend wants to do this she needs to do a hell of a lot of research. I'll put together a quick timeline as some of the info above is a bit crap. 34 now so presumably hasn't applied for September entry in 2012.
Ergo starts uni (at the earliest) in September 2013 aged 35.
If all goes well she will do a 4 year graduate entry degree - thus graduating in July 2017. Starts work (aged 39) in August 2017.
2 year Foundation Programme - UK wide application programme usually consists of 6x 4 month posts within one 'geographical location' eg. West of Scotland (Ayrshire -> Dumfries -> Lanarkshire -> Inverclyde) or Kent/Surrey/ Sussex.... finishes FY training in August 2019. Most FY doctors work 48hrs/ week. This often includes 2-3 weekends in 6. Often annual leave is fixed and allocated on taking up post. This causes huge problems for those with children who need to take their holidays outwit term time. I went on holiday with one of my friends for his first foreign holiday post marriage as his wife was unable to take leave to join him and I was off that week.
Spring 2019 will have been spent applying competitively for Paediatric training. This is a UK wide process. You can express preference for geographical location (same type of area as above). Popular deaneries fill up fast so it is not unknown for people to live far away from their families. I know couples who are spread over Newcastle/ London, Manchester/ Birmingham, Inverness/ Edinburgh as one partner hasn't got the flexibility to up sticks to follow the other person's speciality training. By this point your friend will be 41.
If she is successful and Paediatrics whilst less competitive than other specialities there are still disappointed / unsuccessful people each year. If you go 'straight through' then Paediatrics in 8 years. Many people deviate off to go and work abroad/ do research/ take time out to get exams etc. Your friend would therefore by 49 before she finished her training. Again during those 8 years she will have spent 48 hours / week at the hospital, including lots and lots of antisocial hours (Paeds tends to be v. on call heavy). She will also have been expected to do presentations/ teaching/ run courses to boost her CV during her own time. There is also the small hurdle of MRCPCH qualification (3 lots of difficult exams) and the new ST7 exam. These both require time to revise and a large financial contribution. Exam fees alone are about 3K. Then there are courses/ books to buy.
Most of this comes out of your income as the study leave budget we are allocated is tiny in comparison to the cost of courses. I know colleagues who don't go on courses they should go on as they can't afford them. My allowance is about £700/ year. I"ve spent in excess of £2000 quid this year and I'm not even doing exam courses.
Paediatricians are increasingly doing resident Consultant shifts which are v. tiring. I know that those in their early 50s in post now are apprehensive about how they will cope as they get older and they have years of experience as Consultants to draw on.
Quite frankly, it isn't something that I would be prepared to do to myself or my family. A lot of mature students go in and do GP (even if they have intended to do something else) as the training is much shorter (Medical school + Foundation Programme + 3 years (soon to be 4 years)). If she took this option then she could be working by 45.
There will be people that say ' you don't need to be a Consultant'. You don't. But increasingly the non Consultant grade jobs include very burdensome on call commitments - the idea of working 2 out of 3 weekends in my 50s with very limited ability to swap depresses me +++. In addition even to be a Specialist Doctor in hospital medicine you would need to do about the same amount of training as a GP.
I'm sorry this is epic but there was a lot of misinformation on the thread from folk who I assume don't really know much about the medical training less so the practicalities of living through it.