When I started on this journey there seemed to be 101 conflicting views on just about everything from what to eat and what supplements to take.
Having spent a lot of time over the past 3 months reading around it does seem that the 4 sources of advice I pay most heed to have a lot in common - I find this most reassuring.
The PHD book had one extraordinary case study over the use of beef liver supplements and the staggering effect on althletic performace under pressure.
Not sure how many other use these liver capsules but will report back if I find they are helpful.