AMAB (Assigned Malik At Birth)

It also includes these fascinating paragraphs about the role of estrogen in different types of physical activity, directly debunking the widespread notion that estrogen is the weak human's hormone and only does weak human things:

Given the fitness world's persistent touting of the hormone testosterone for athletic success, you'd be forgiven for not knowing that estrogen, which females typically produce more of than males, plays an incredibly important role in athletic performance… The estrogen receptor—the protein that estrogen binds to in order to do its work—is deeply ancient. Joseph Thornton of the University of Chicago and his colleagues have estimated that it is around 1.2 billion to 600 million years old—roughly twice as old as the testosterone receptor. In addition to helping regulate the reproductive system, estrogen influences fine-motor control and memory, enhances the growth and development of neurons, and helps to prevent hardening of the arteries. Important for the purposes of this discussion, estrogen also improves fat metabolism. During exercise, estrogen seems to encourage the body to use stored fat for energy before stored carbohydrates. Fat contains more calories per gram than carbohydrates do, so it burns more slowly, which can delay fatigue during endurance activity. Not only does estrogen encourage fat burning, but it also promotes greater fat storage within muscles… which makes that fat's energy more readily available. Adiponectin, another hormone that is typically present in higher amounts in females than in males, further enhances fat metabolism while sparing carbohydrates for future use, and it protects muscle from breakdown. Anne Friedlander of Stanford University and her colleagues found that females use as much as 70 percent more fat for energy during exercise than males. Estrogen's ability to increase fat metabolism and regulate the body's response to the hormone insulin can help prevent muscle breakdown during intense exercise. Furthermore, estrogen appears to have a stabilizing effect on cell membranes that might otherwise rupture from acute stress brought on by heat and exercise. Ruptured cells release enzymes called creatine kinases, which can damage tissues… Linda Lamont of the University of Rhode Island and her colleagues, as well as Michael Riddell of York University in Canada and his colleagues, found that females experienced less muscle breakdown than males after the same bouts of exercise. Tellingly, in a separate study, Mazen J. Hamadeh of York University and his colleagues found that males supplemented with estrogen suffered less muscle breakdown during cycling than those who didn't receive estrogen supplements.

I am begging the UK trans community and its allies to attend the rescheduled Mass Lobby at Parliament, now on Wed Sept 9th, 1pm-5pm, organised by Trans Solidarity Alliance.

The new EHRC Code of Practice pushes trans people out of toilets, hospital wards, and community spaces. It normalises gender policing based on appearance and stereotypes. It became statutory guidance in the UK on August 5th, 2026.

Trans people are now legally their assigned gender at birth and must join gendered spaces accordingly, but if they are perceived as their lived gender, they can also be ejected from those spaces. The guidance says: either break the law, or don’t pass too well.

A mass lobby is where you invite your MP to discuss your concerns with you in-person. Our demands have changed. Ask your MP to:

Write to Ministers and Prime Minister Andy Burnham to say they are profoundly concerned by the rolling back of trans rights, and that they believe that it is time for Parliament to legislate to protect equality for trans people.

Ask parliamentary questions focused on protecting trans people’s rights and defending trans people’s abilities to live safe and dignified lives.

Speak up both inside and outside Parliament in defence of trans people’s rights.

Meet regularly with trans constituents to understand their lived realities. 

Your MP does not have to be an ally, they do not have to respond to your email for you to show up and greencard them (details below the cut.) What matters is that as many people as possible show up.

I cannot stress this enough: Showing up in person matters. It is much more effective than petitions, emails, and letters.

We have already had some wins because we took action. The 2026 EHRC guidance has already rolled back its most harmful elements because of mass campaigning by individuals like us, and groups like The Good Law Project. This summer, 166 MPs signed the Early Day Motion 240 to reject the EHRC Code of Practice, because of our campaigning. That is 1 in 4 MPs.

It is a horrible, stressful time, and I am so sorry if you're trans and live in the UK. But I was at last year's mass lobby and the line for greencarding alone stretched around the back gates. It was a record breaking mass lobby and made us impossible to ignore. Let's do even better this time. Details under the cut: