Shanna Swan, Ph.D.: “[Sperm count] is not just about having babies. It's about how healthy you’re going to be as you get older.”

Swan, an environmental and reproductive epidemiologist, joins mbg co-CEO, Jason Wachob, to discuss why sperm count is declining (and what it means for overall health), plus:

- Lifestyle factors that can affect fertility

- The best & worst foods for reproductive health

- How city dwellers can limit exposure to endocrine disruptors

- The connection between environmental chemicals & erectile dysfunction

- How to increase sperm count & enhance fertility

Referenced in the episode:

- Swan's book, Countdown.

- Swan's meta-analysis showing sperm count dropped 59% from 1973 to 2011.

- Swan's podcast episode on The Joe Rogan Experience.

- Environmental Working Group's consumer guides.

- A study showing prenatal exposure to phlathlates associated with decreased penile size.

- Defend Our Health website.

- A study showing male exposure to BPAs at work associated with sexual dysfunction.

- A 2015 study in Denmark showing smoking marijuana more than once a week associated with 29% lower sperm count.

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