The Sex Psychologist: We're Not Having Enough Sex! Fat Makes You Attractive! Dr Bill Von Hippel

Summary

Evolutionary psychologist Dr. William “Bill” von Hippel argues that many modern problems arise because our surroundings have changed faster than the instincts shaped by our ancestors’ lives. His central theme is that people need both autonomy—freedom to pursue their own goals—and connection with family, friends, and community. He believes affluent, urban societies tend to prioritize autonomy at the expense of connection, contributing to loneliness and lower well-being.

Many of the ideas below are von Hippel’s interpretations of research. Some—particularly claims about attraction, neurodivergence, and evolutionary explanations—are presented as hypotheses rather than settled conclusions.

Main Ideas

1. Evolution, Happiness, and Modern Life

• Von Hippel studies the possible evolutionary roots of human behavior. He suggests that feelings of happiness can encourage behaviors that benefited our ancestors, such as socializing, eating calorie-rich foods, or caring for children.
• Some modern pleasures may be “phenotypic indulgences”: experiences that activate responses once useful to our ancestors but may no longer serve us in the same way. He gives video games and highly processed food as examples.
• He contrasts modern material comfort with reported happiness among the Hadza, a hunter-gatherer people in Tanzania. He cites a study in which more than 90% of the Hadza surveyed said they had been happy during the previous week, compared with about half of Western respondents. He treats this as suggestive evidence, not proof that one lifestyle is universally happier.

2. The Trade-Off Between Autonomy and Connection

• Von Hippel’s main explanation for modern unhappiness is that people increasingly choose individual preferences over shared activities and relationships.
• He points to trends in the United States and other wealthy societies: more people living alone, fewer regularly socializing with neighbors, couples spending less time together, and declining marriage and cohabitation rates.
• He argues that cities offer opportunity, education, and higher incomes, but can also make people socially isolated—even when they live close to many others. Rural residents, in the comparisons he discusses, report stronger friendships and greater happiness despite being poorer on average.
• Wealth and education can reduce reliance on neighbors because people can pay for services instead of exchanging help. This may increase convenience while weakening everyday social ties.
• His preferred goal is not to reject independence, but to maintain a better balance: pursue individual ambitions while preserving dependable relationships.

3. Money, Status, and Happiness

• Von Hippel says higher income can improve an individual’s happiness, including at income levels above thresholds once thought to mark a plateau.
• At the same time, he cites the “Easterlin paradox”: society can become much wealthier over time without average reported happiness rising correspondingly.
• He distinguishes the value of money for security and personal well-being from its role as a status signal. Relative wealth may feel rewarding because it can improve someone’s standing compared with others, even if rising wealth across society does not make everyone happier.
• He suggests spending on experiences—especially shared experiences—may bring more lasting satisfaction than spending on possessions, which can become part of an endless comparison over status.

4. Attraction and Dating

Von Hippel describes attraction through an evolutionary framework, emphasizing signals that are difficult to fake. These are his account of average tendencies, not rules for every person.

• Men: He identifies risk-taking, physical size, earned wealth, and ambition as possible signals of competence, resilience, or future provision. He says elevated testosterone and risk-taking may be associated with attracting partners, but continued risk-taking can become counterproductive once a person has a family depending on them.
• Humor: He proposes that spontaneous humor can signal mental agility and the ability to make unexpected connections.
• Kindness: He argues that kindness is a powerful partner quality because it indicates someone will care for and support others. In his account, kindness can outweigh many other traits once a person meets a basic level of competence.
• Women: He says evolutionary theories emphasize youth, health, and sufficient body fat because pregnancy and reproduction are physically demanding. He discusses hip-to-waist ratio as a feature that may remain attractive across changing cultural ideals, and suggests fat stored around the thighs and hips could have been nutritionally useful during pregnancy. This is a specific evolutionary explanation, not a general claim that “fatter is always more attractive.”
• Gender differences: He argues that men, on average, place more weight on physical cues associated with fertility, while women may be more flexible in what they find attractive and may value status, reliability, and the capacity to help raise children. He acknowledges that culture also shapes attraction.
• Dating apps: He describes a mismatch in which a relatively small share of men receive most of the attention on apps, while many women receive attention from people they are not interested in. He says apps favor quick, visible signals and may make it harder to recognize qualities such as kindness and reliability.
• Education and partnering: He notes that women now earn a larger share of university degrees in some cohorts. If women tend to seek equally or more educated partners and men tend to seek equally or less educated partners, he argues, this can make matching more difficult. He also speculates that conventional schooling may fit some boys less well, contributing to lower male participation in higher education.

5. Pornography, Sex, and Falling Birth Rates

• Von Hippel says young adults in the United States appear to be having less sex than previous generations, while pornography consumption has increased. He suggests that digital substitutes may discourage people from going out and forming relationships, but acknowledges that the explanation is uncertain.
• He separates sexual activity from having children: contraception allows people to have sex without reproducing, so less sex is not the only explanation for falling fertility.
• His evolutionary argument is that humans evolved to seek sex and to care for children who arrive, rather than to have an independent, universal desire for children.
• He points to the practical costs of parenthood—childcare, expense, work pressures, and exhaustion—as reasons people may choose not to have children. He argues that reducing these burdens could make parenthood more appealing.
• He says many wealthy, industrialized countries have fertility rates below the level required to maintain their populations without immigration, and discusses projected population declines.

6. Children and Robot Caregivers

• Von Hippel suggests that future robots could help with childcare by taking on some of its exhausting tasks. He argues that a reliable, patient robot could supplement parents and human caregivers, much as families have historically relied on other people for help.
• The host raises concerns about attachment, development, and whether a child might treat a robot as a parent. He cites an unnamed child-development professional’s view that early caregiving and parent-child interaction are important.
• Von Hippel does not argue that parents should give up parenting; he frames robots as possible assistants. He also stresses that caregiving has personal value and that he would not want to lose the meaningful parts of raising a child.
• The discussion is speculative: no evidence is presented that robot caregivers can provide the emotional or developmental benefits of human caregivers.

7. Marriage and Well-Being

• Von Hippel says that, on average, getting married does not necessarily make people happier. He describes longitudinal research suggesting different patterns: some couples become unhappy before marriage and later divorce; some stable couples remain around their pre-marriage happiness level; and others become happier over time.
• He suggests that the people who marry and the people who do not may differ in how much they value connection versus autonomy. In this interpretation, marriage itself is not a guaranteed happiness intervention; the broader pattern of social connection matters.
• He notes that marriage is associated with a modest longevity benefit for both men and women in older age, slightly larger for men in the example he gives.

8. Neurodivergence, Anxiety, and Religion

• Von Hippel says neurodivergence may have been present throughout human history. He speculates that people less inclined to follow ordinary social patterns may have contributed disproportionately to innovation, while social networks helped spread their ideas.
• He also suggests that pollutants could be related to rising rates of neurodivergence, but explicitly says he is guessing and does not know the cause.
• He treats ADHD as partly a mismatch with modern demands: difficulty sustaining attention on boring tasks may be costly in a classroom but less problematic in an environment where activity and interest are more central. This is presented as an evolutionary interpretation.
• He explains anxiety as a possible cost of humans’ ability to imagine the future: anticipating future danger can be useful, but can also produce persistent worry. He says focusing attention on the present may help reduce future-oriented anxiety.
• On religion, he suggests that religious belief can provide meaning and that religious communities can provide regular social contact. He says the social benefits may be especially important for wealthier people, who are less likely to depend on neighbors in everyday life. He also acknowledges that people can find meaning outside religion.
• He personally describes life as lacking inherent meaning and argues that people can still make the most of it by connecting with and caring for others.

9. Cooperation, Tribalism, and Power

• Von Hippel argues that humans became successful partly through cooperation, communication, planning, and division of labor. These abilities helped people coordinate in ways other animals generally cannot.
• He also describes humans as tribal: cooperation within a group can coexist with suspicion or hostility toward outsiders.
• In his account, power depends not only on strength or wealth but on social backing. Because individuals are vulnerable when alone, leaders need allies and people who are willing to support them.
• He says displays of power vary across cultures. In some societies, visible wealth and self-promotion communicate status; in more collectivist settings, modesty may be more effective.

10. Relationships and Monogamy

• Von Hippel characterizes humans as tending toward “serial monogamy,” while also suggesting that people in ancestral societies sometimes had outside partners. He uses comparisons between human, gorilla, and chimpanzee reproductive patterns to support this interpretation.
• These are evolutionary hypotheses, not a moral endorsement of infidelity or a claim that any one relationship arrangement is right for everyone.
• He also discusses how humans’ ability to think about the past and future distinguishes them from other animals. His examples include dogs learning associations and animals displaying food-storage or caregiving behaviors without necessarily understanding the future purpose.

Practical Recommendations from von Hippel

He offers five broad suggestions for increasing the chances of a connected and satisfying life:

1. Prioritize family or a chosen family.

   • Spend regular time with relatives or build close relationships with people who can serve as family if biological relatives are unavailable or harmful.
   • When possible, share meals and conversation rather than merely being in the same room with a screen on.
   • If distance makes visits difficult, create regular calls or other routines.

2. Choose connection over convenience sometimes.

   • When friends or a partner invite you to do something, occasionally set aside your preferred solo activity and join them.
   • Do not abandon personal ambitions, but make room for recurring time with people who matter.
   • If pursuing a demanding goal, decide in advance what success means and when you will reassess. Otherwise, it can be easy to keep extending the work period indefinitely.

3. Consider having a pet.

   • Von Hippel says pets can provide companionship and routine, particularly during periods when work or other goals take priority.
   • He presents this as one source of connection, not a replacement for human relationships.

4. Make room for unstructured time together.

   • Allow time for casual conversation and “just sitting around” rather than filling every spare moment with entertainment or a phone.
   • Be present during ordinary social moments; they may feel unremarkable but can strengthen relationships.

5. Pursue goals with another person.

   • Exercise, learning, hobbies, and other lifestyle changes are often easier to sustain when someone else participates and offers accountability.
   • Use social connection to make desired changes more achievable as well as more enjoyable.

He also recommends making connection easier to maintain by attaching it to existing routines. For example, if two people already enjoy the same activity, they can do it together regularly rather than relying on a fresh decision each time.

Preliminary WHOOP Observations Discussed

Von Hippel describes analyses from his contracted work with WHOOP, while stressing that the findings were preliminary and had not yet been validated through peer review.

• In the data he had examined, exercise appeared to amplify the effects of other behaviors: some negative effects looked worse on exercise days, while some positive habits appeared to have greater benefits.
• He gives alcohol as an example, saying its association with resting heart rate and heart-rate variability appeared stronger on days when a person also exercised. He says he did not yet know the mechanism.
• He notes that walking after eating may be beneficial, and that some practices—such as dimming lights or reducing blue light in the evening—appeared helpful for sleep in the data.
• He says individual responses vary: reading in bed or using a weighted blanket may help some people but not others.
• He reports that men in the dataset averaged about 20 minutes less sleep than women and speculates that men may get more recovery benefit per hour of sleep. He stresses that this is an early finding.
• He says sleep-related worry can itself make sleep harder, and that routines that redirect attention may help.
• He advises that caffeine late in the day can disrupt sleep for some people, and suggests limiting eating to daylight hours.

Speakers and Sources Featured

Speakers

• Steven Bartlett — Host and interviewer of The Diary of a CEO.
• Dr. William “Bill” von Hippel — Evolutionary psychologist and interview guest.
• Steven Bartlett also delivers the promotional segments for the show and its sponsors.

Researchers, Works, and Data Sources Mentioned

• Frank Marlowe — Ethnographer and author whose work on the Hadza is discussed.
• Robert Trivers — Cited for the term “phenotypic indulgence.”
• Brendan Zietsch — Cited in connection with a proposed genetic explanation of sexual orientation; von Hippel presents this as an evolutionary hypothesis.
• Daniel Kahneman — Likely the researcher intended in the subtitle’s unclear reference to “Danny Conan,” in connection with research on moment-to-moment enjoyment and life satisfaction.
• Richard Dawkins — Mentioned in relation to chance, life, and Unweaving the Rainbow.
• Robert Greene — Mentioned by the host as a recent guest and author of The 48 Laws of Power.
• General Social Survey — Cited as a public source of U.S. survey data.
• WHOOP data and performance-science team — Source of the preliminary wearable-data observations discussed by von Hippel.
• Unnamed child psychotherapist/psychologist — Cited by Bartlett regarding the importance of early caregiving.

Sponsors and Promotional Sources

• Shopify
• WHOOP
• Perfect Ted