The addition of the hormone progesterone to gender-affirming hormone therapy leads to increased breast growth for transgender people following feminising hormone therapy. This is demonstrated by an Amsterdam UMC-led trial among 90 participants and these results are presented today at the European Professional Association for Transgender Health (EPATH) annual congress in Hamburg.

Blood pressure, body temperature, hormone levels: all these things aren’t static throughout the day. The same may be true for biological compounds found in breast milk, a new study has found. Using expressed breast milk, a team examined fluctuations of hormones like melatonin and cortisol, which impact babies’ circadian rhythm, and proteins that influence development and immunization. The team showed that certain compounds spiked at different times of the day. In a society where not every mother can stay with their baby around the clock, this information might allow for optimized feeding of expressed breast milk, the researchers said.  

The American Society for Radiation Oncology (ASTRO) announced today the press program for its 2025 Annual Meeting this month in San Francisco. Researchers will discuss their findings in news briefings on Sept. 29 and 30, and complimentary meeting registration is available for credentialed press. The field's most influential scientific forum, ASTRO's Annual Meeting will feature pivotal studies in radiation medicine for patients with cancer and other diseases.