As far as I know, Karen, or as far as I used to know, he was the epitome of good health, insofar I, as a qualified first aider could ascertain, up until the day he left me (and aside from the aforementioned wonky willy issue). He is slightly shorter than average, and a bit muscley, has very little body fat, and plays sport 5/6 times a week.
I only learnt he had a heart condition, FROM WHICH HE IS GOING TO DROP DOWN DEAD FROM AT ANY MOMENT IN TIME, when he submitted his 'defence' three hours before the last court hearing, and when he revealed to the judge (by way of telephone hearing) that he was in actual fact regarded in medical terms as 'obese'.
And, err, after I went to court, I hooked up with my friend and her husband, neither of whom's highest level of medical knowledge is First Aid.
I said: "Well, today's surprise is that he has a heart condition FROM WHICH HE IS GOING TO DROP DOWN DEAD FROM AT ANY MOMENT IN TIME"
She said 'Oh, don't tell me he's got the [named heart condition]
I said 'yes, that's it'. And that's how I learnt almost all athletes, and grossly overweight people have it. It is not a life-threatening illness. It does not even require a 'life-style' change, aside from, perhaps doing a little less rigorous sport.
In fact both her and her husband did this 
At the same time I learnt that it is no longer politically correct to call people grossly overweight. Apparently, it is now 'jollily overweight'.
Since STBXH is neither jolly nor overweight, I have little or no regard for his obesity.
And that's how I learnt, by incidentally having a very lovely friend, who works with other people, who are also rather lovely, and whom also cannot boast that their highest level of qualification is a Boy Scouts/Brownies' First Aid Certificate, that actually he is the epitome of good health for a man of his age.
But, by having a SHB and a SHL I have learnt it is not for me to prove that he has a heart condition FROM WHICH HE IS GOING TO DROP DOWN DEAD FROM AT ANY MOMENT IN TIME. It is for him to prove....
And in other news: His blood pressure was 'excellent' for a man of his age (nowhere near retirement).
So I fear, that should I accept your Toad's tablets, I'll be accused of pre-mediated murder.
But thanks for the offer.