I've noticed that poor quality organ meats will cause pimples, along with other environmental liver stressors. Sometimes I will get an old EWE that isn't quite optimal, and will lead to weird symptoms such as acne and PMS. Its probable that hormonally unbalanced animals will pass on negative hormonal effects to people who consume them.
There are just so many factors which could contribute to such symptoms. First of all most male animals are castrated and forced to live in confinement on limited forage, these animals may not be hormonally optimal by any means, and without a balanced intake of optimally healthy male and female hormonal factors, one can concur such negative hormonal effects. If I eat too many female animals, (especially older fatty ewes) without balancing it out with a prime Ram, then I begin to feel symptoms of estrogen overload.... that point forces an instinctive stop which forces me to seek out a more masculine source of food.
Its difficult to describe all the symptoms of estrogen overload, sometimes the first week or so of eating a particularly estrogen rich female there are positive feelings, more calm, affectionate, loving....but then after awhile it turns into an emotional rollercoaster of ups and downs and somtimes leads to lower libedo, acne, depressive feelings...this ussually dissipates within a week of eating on a masculine animal.
I think there are hormonal differences depending on factors such as Younger females with nursing lambs, pregnant ewes, older unbred ewes, particular types of forage which may be more estrogenic.
For optimal hormonal balancing I think a mixed diet of prime breeding aged unbred females, and Males within a small group who are not overly sexually exhausted...from pastures that are lush, varied, and not overgrown with estrogenic herbs and legumes....where the water source isnt full of chlorine and runoff from the industrial wastelands.
None of these factors will be described on the label at the local market, so the only way I have been able to know for sure is to source directly from the farm.