Nutritional Revolution Podcast · Kyla Channell, MSc Nutrition & Human Performance

From 18 to 80: How Age & Hormones Shape Female Muscle with Dr. Steven O’Bryan

·59 min·4 clips

Dr. O'Brien says female strength decline accelerated around 43 to 48 years, near menopause onset.

Kyla Chanel opens Nutritional Revolution with a science first frame and a reminder that the show is for educational purposes only, not a substitute for medical diagnosis and treatment. She sets up the episode around sex differences in sport and the way female strength changes across the lifespan. Steven comes on to discuss a study that tracked strength over time and also tried to link those changes to sex hormone levels. That is not easy in females, especially pre menopausal and perimenopausal females, because hormones change daily and it is hard to capture everything on the same day. The analysis still made room for that reality. It looked at whole body isometric strength. It also looked at one rep max performance. Measures of contractility inside the muscle were part of the picture too. The main pattern was a period of faster decline around ages 43 to 48. That window sits near the typical onset of menopause, which can happen as early as 40 for some women and as late as 55 for others. The analysis also suggested that isometric strength was tied to decreases in estrogen and progesterone post menopause. The episode closes with a reminder that listeners can follow Steven's work and the show's own channels. The tone stays interview led throughout.

As heard by us

A focused look at midlife strength changes and the hormone links that may help explain them.

Kyla Chanel and Steven keep the conversation tightly on how strength shifts across the lifespan and how those changes may track with sex hormones.

Read the full review in PlayNext →

Why you'd press play

You want a clearer read on why strength can start to fall faster in the 40s, and how sex hormones fit into that shift.

Read the full recommendation in PlayNext →

Listen to the show on

Apple Podcasts Spotify

Play clips from this episode More from Nutritional Revolution Podcast