Like the slow acquisition of the dreaded beer belly, hair loss is one of the unique downsides of being a man.
But while we all know the solution to the former - quit the beer, buy some running shorts - tackling male pattern hair loss, something that affects around 70% of us at some stage, is less obvious.
"Whether it's simply coming to terms with a new, cropped look, or actually investing in hair growth treatments, a thinning head of hair or a receding hairline is certainly not the end of the world," says Brady.
"First, you need to identify what is going on. Either you'll have 'temporal thinning' (above the temples, at the front of your head) or 'crown thinning' (at the back).
"The full effects of balding take a long time to see; it's a gradual process. The good is that this means you have plenty of time to tackle the issue."
What is it?
"Most hair loss is caused by dihydrotestosterone (DHT) – an androgenic hormone – which is formed by a lack of testosterone. This causes the hair follicles to get smaller, preventing the hair from coming through the skin's surface."
Why does it happen?
"There is no definitive answer here – but the main reasons are genetics, and that thing called 'aging'. There are other factors which can contribute to, but not cause, thinning hair, like poor nutritional health, stress, smoking and bad sleeping habits."
When will it happen?
"This depends on each individual case. It is said that 20% of guys will get it in their 20s; 30% in their 30s and so on."
How do you treat it?
"There are two things you can do here. If you have caught the areas of thinning hair in time (phew!) you can use an ointment containing Minoxidil (a known brand is called Rogaine) which will help to stimulate hair follicles which are already damaged, reopening them to allow hair to push through. However, this is merely a preventative hormone, and won't stop balding altogether.
"Alternatively, you could take Finasteride (Propecia is the best option here), an orally taken drug, which will prevent the conversion of testosterone to dihydrotestoterone. If these options don't work, then a hair transplant is the way forward."
What can your barber do?
"The best idea is to develop a good relationship with your barber. Most of them know a bit about hair loss, but they will know a lot about what hairstyles work for you and how to make you leave the barber shop feeling better than when you came in."