How to reverse declining birth rates? The guy from Jim’s Mowing has a theory and it’s … unusual | Population
Jim Penman, CEO of Jim’s Group, claims that global birthrate declines stem from dopamine desensitization caused by social media, drugs, and pornography. In his book, The Birth-rate Crisis: the Hidden Catastrophe in the Global Decline, Penman proposes that biological interventions—including gene editing and GLP-1 drugs—could restore the brain’s reward sensitivity and encourage family growth.
Why is the global birthrate falling?
Most countries now report birthrates below the replacement level of 2.1 births per woman. Australia’s current rate stands at 1.48, according to data cited by Penman. While governments have attempted to fix this with financial incentives, Penman argues that policies like Australia’s baby bonus haven’t changed the trajectory.
Penman attributes the decline to a biological “blunting” of the human dopamine response. He writes that constant exposure to “surges” from calorie-dense foods, caffeine, gambling, and promiscuous sex makes the prospect of raising children seem “boring” by comparison. He suggests that when the brain is overstimulated, the everyday rewards of marriage and parenthood lose their appeal.
How could biological solutions fix the fertility crisis?
Penman argues that cultural shifts aren’t enough and that “scientific interventions may become necessary.” Through his research company, Epigenes Australia, he is investigating medical ways to reset the brain’s sensitivity to dopamine.
One avenue involves mimicking calorie restriction. Penman points to studies where female rats with restricted food became more attentive toward their young. His team is exploring how to induce these effects in humans, though Penman notes that high regulatory costs in Australia are pushing much of this research to China.
Potential medical tools for “resetting” the brain:
- GLP-1 Drugs: Penman is exploring medications similar to Ozempic (semaglutide), which have been shown to reduce cravings for alcohol, smoking, and gambling.
- Gene Editing: He suggests that CRISPR technology could be used to alter epigenetics, making marriage and children more appealing.
- Pheromones: The research team is investigating whether specific biological markers can restore reward sensitivity.
However, not all scientists agree on the safety of these tools. Paul Kenny, a neuroscientist at the Icahn School of Medicine in New York, recently noted that GLP-1 drugs might cause “emotional flatness,” potentially affecting social interactions and emotions.
What is the link between dopamine and sexual activity?
Penman argues that limiting sexual outlets increases dopamine sensitivity. He cites his own adolescence, where he had no sexual outlet for five years after puberty except nocturnal emissions, as a factor that made his brain “unusually sensitive” to rewards.
He points to religious groups like the Amish and Mormons as evidence. According to Penman, these communities maintain higher fertility rates because they discourage gambling, heavy drinking, and sexual activity outside of marriage—including masturbation. He claims that by avoiding these “surges,” members of these communities find more pleasure in traditional family life.
How does Penman’s theory compare to other pro-natalist views?
Penman’s biological approach differs from both traditional political conservatism and socio-economic theories. While he’s running for the Libertarian party in the Victorian election, his focus is on chemistry rather than just culture.
| Perspective | Proposed Cause | Proposed Solution |
|---|---|---|
| Jim Penman | Dopamine desensitization | Gene editing, GLP-1 drugs, abstinence |
| Socio-Economic (Nine Poll) | Housing, childcare costs | Subsidized care, WFH policies, affordable housing |
| Traditional Right (Musk/Kirk) | Cultural decay, “partying” | Marriage, traditional family values |
Other high-profile figures have sounded the alarm on birthrates. Elon Musk has called the collapse the “biggest danger civilisation faces by far,” while US health secretary Robert F. Kennedy has labeled the fertility crisis a threat to national security. Donald Trump has similarly positioned himself as a “fertilisation president” to encourage a baby boom.
Frequently Asked Questions
What is the “dopamine theory” of birthrates?
It’s the idea that modern stimulants (porn, social media, drugs) overstimulate the brain’s reward system, making natural rewards like parenthood feel unappealing or “boring.”
Can GLP-1 drugs like Ozempic increase birthrates?
Jim Penman suggests they might by reducing interest in addictive behaviors, though neuroscientists like Paul Kenny warn they could cause emotional flatness.
What is Australia’s current fertility rate?
Australia’s birthrate is 1.48, which is significantly below the 2.1 replacement level required to maintain a stable population without immigration.
What do you think? Could biological interventions be the answer to the global birthrate decline, or are the causes purely economic? Let us know in the comments or subscribe to our newsletter for more deep dives into future health trends.