'A few are: Previous breast surgery, imbalance of crucial hormones, thyroid problems, PCOS, diabetes, depression and/or anxiety, prescription drugs, chemotherapy, insufficient glandular tissue, inefficient latch, premature birth. The list goes on.

Scotland Yard is set to wind up its investigation into Madeleine McCann's disappearance, according to reports. The Sun claimed last night that funding for the Operation Grange inquiry - launched four years after the Portuguese police began their unsuccessful search for the youngster in 2007 - will end later this year unless new lines of inquiry emerge
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Detectives are said to be frustrated by the failure to compile sufficient evidence to prosecute Christian Brueckner, a convicted paedophile, who was named two years ago by German police as the prime suspect for Madeleine's abduction.
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'The letter did not state that there was evidence or proof that Madeleine is dead, the MPS continues to investigate Madeleine's disappearance as a missing person investigation. No letter has been received by the Met from the German prosecutor.'
Otherwise you risk excluding young girls from their own sport at a time when it is imperative to both their physical and mental health. We already struggle to keep young girls engaged in sport. What's more, in contact sports this situation is a serious accident waiting to happen.
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'For those that have ever glanced at a woman feeding a newborn with a bottle and questioned it in their head, there are several reasons why mums might not be able to breast feed besides being in intensive care.
'Crazy to think that when the crisis team asked me if I could manage a routine a few weeks ago I would have had a panic attack,' she continued '(or a panic cycle) where I never reach the peak but then also never get out of a high state of panic.'
They didn't. In fact, last year they dropped testosterone suppression as a requirement and prioritised the inclusion of transgender athletes over fair sport for females, in the process discriminating against half of the world's population.
'I remember being encouraged to breast feed after my first operation. My baby was practically thrown onto me. I was linked up to one of the 10+ blood transfusions I had and I was on quite a lot of meds and something about it just felt really gross.
Brueckner also is alleged to have admitted abducting Madeleine to a friend - and the German team of investigators, led by public prosecutor Hans Christian Wolters, said they were certain he had killed the three-year-old.
He was last year found guilty of the 2005 rape of a 72-year-old American woman in the same Portuguese resort from which Madeleine vanished and sentenced to seven years in jail, at a court in Brunswick, Lower Saxony.
Detectives are said to be frustrated by the failure to compile sufficient evidence to prosecute Christian Brueckner (pictured), a convicted paedophile, who was named two years ago by German police as the prime suspect for Madeleine's abduction
I would like Lia to be free to compete in a category appropriate to her biological sex and I want her to feel welcome when doing it, not to touch the wall to silence.
I have always wanted fair sport for females — they must have an equal chance of success in sport, where physiology is vital to performance. Bodies do sport, not feelings.