Athletics in this country has been dominated recently by the on-going issue of doping - and more specifically, nandrolone.
Both Mark Richardson and Dougie Walker have now been cleared by UK Athletics. With both of those guys you believed it when they said they were innocent, from the word go, but it was important to them that they were proved so on scientific grounds.
There are just so many questions about the natural levels of nandrolone you can expect to find in your system. How can some athletes have much higher levels than others?
The study carried out by Professor Ron Maughan and his team at Aberdeen University partly explains it, but the IAAF might not been convinced.
Amazed
We were all amazed when news initially broke about Mark Richardson testing positive. You think to yourself, no, not him, everyone must know he's not a cheat.
But then I remember what people around the world used to say when Seb Coe, Steve Ovett and myself were all at our peak.
Because there were three of us at the top, you used to hear whispers that we must be on something.
People on the outside do tend to take a cynical view. It is easy for us in the UK to stick with an athlete, but elsewhere in the world they don't care.
When you travel round Europe, people are not bothered about Richardson and Walker. They assume guilt and move on.
Sotomayor
It is not a nationalistic thing. Over in Cuba, where Javier Sotomayor is facing a doping ban after testing positive for cocaine, you hear about almost nothing else.
He has even been backed by Fidel Castro, but over here most people know next to nothing about it.
And if the problems we have experienced in the UK have hit the athletes involved hardest, it has also been an extremely tough time for UK Athletics.
The time, money and energy they have had to put into clarifying a situation that is not their fault - the levels of nandrolone that can naturally exist in an athlete's system - are huge.
An independent international drug-testing agency should have been set up years ago, but despite a lot of noise, there has been no positive action.
There were even European politicians talking about it, yet nothing has happened.
Dave Moorcroft had hoped to spend his time developing the sport in this country and finding champions of the future. That is the job of a national federation, not trying to establish the science behind the tests.
Tarnished
Some people are concerned that the image of athletics is being tarnished by all this. Sometimes it seems that more athletes are found guilty of doping than in other sports, football for example.
I would argue that this is simply because athletics has a longer history of strict testing than other sports.
If you are taking part in athletics on a regular basis, chances are you will be tested on a number of occasions.
In four years of being a decent athlete, you will be tested loads of times.
It is not a nice subject to be talking about, but it is worth remembering that drug-testing was brought in to protect individuals as well as catch cheats.
It is a necessary part of the sport.