Sex Scientist: Phone Addiction Is Killing Your Sex Life More Than Porn!

Sexual health is influenced by a broad interplay of physiological, psychological, environmental, and interpersonal factors. Dr. Rena Malik and Steven Bartlett discuss four foundational pillars—fuel, strength, environment, and confidence—each vital to achieving and maintaining optimal sexual wellness for all genders.

Pillar one: Nutritional Foundation for Sexual Function

Diet is central to sexual health, with robust research supporting the Mediterranean diet’s benefits. This diet, comprising healthy fats like avocados and nuts, lean proteins, and an abundance of fruits and vegetables, is linked to a 22% lower risk of erectile dysfunction in men, according to the Health Professionals Follow-Up Study involving 20,000 men.

Specific foods have also been shown to support erectile function. Studies highlight pistachios—with 100 grams daily reducing erectile dysfunction—alongside almonds and other nuts due to their omega-3s and healthy fats. Flavonoid-rich fruits such as blueberries, citrus, and red fruits (lycopene sources) act as antioxidants and have been associated with reduced rates of erectile issues. Regular blueberry consumption, for example, is correlated with around a 20% improvement in erectile function.

Dietary fiber is another cornerstone. Once ingested, fiber is converted by gut bacteria into short-chain fatty acids, which protect blood vessels, improve metabolic health, and reduce risks tied to diabetes, hypertension, and elevated cholesterol—factors that simultaneously bolster erectile function. Meeting the daily recommended intake—38 grams for men, 25 grams for women—is crucial.

Maintaining caloric balance is equally essential. Excess fat, or adipose tissue, increases risks for erectile and other sexual dysfunctions, so keeping weight within a healthy range strongly supports sexual health.

Pillar two: Strength - Conditioning & Pelvic Floor

Physical activity is as effective as medication for many men with erectile dysfunction. A widely quoted study found that 150 minutes of moderate cardiovascular exercise weekly yielded equivalent improvements to [restricted term], while men with heart disease who did a structured walking program improved erectile function by 70%.

Resistance training—especially involving large muscle groups like the lower extremities and glutes—not only strengthens muscles but also increases [restricted term] levels when practiced regularly. Men who maintain muscle mass through resistance exercise are three times less likely to experience erectile dysfunction, maintaining both desire and sexual satisfaction.

Attention to pelvic floor health furthers these benefits. The pelvic floor muscles contract rhythmically (about every 0.8 seconds) during orgasm, aid ejaculation in men, and their health directly affects sexual function. Dysfunction—often involving excessive tension or injury—can cause back pain, constipation, urinary urgency, erectile issues in men, and orgasm difficulties or discomfort in women. For women, pelvic floor exercises enable stronger contractions during intercourse, enhancing sensation.

While Kegels can strengthen these muscles, they’re not suitable if there’s already tension or discomfort, as further tightening may worsen symptoms. In such cases, specialized pelvic floor relaxation exercises—such as diaphragmatic breathing or yoga poses like happy baby and child’s pose—are essential, and sometimes a pelvic floor physical therapist is needed for targeted intervention.

Pillar Three: External Factors Affecting Sexual Health

External factors—including stress, sleep, environmental toxins, social influences, and media habits—significantly affect hormonal balance and sexual function.

Stress elevates cortisol, which suppresses [restricted term] and keeps the sympathetic nervous system activated, preventing arousal. Effective stress management is essential. Evidence-based methods include 20-second hugs and six-second kisses with a partner, breathwork, movement, and positive social interactions—even casual conversations, which help signal safety to the brain.

Chronic sleep deprivation also undermines sexual health. Men who limit sleep to five hours a night for just a week experience a 15% drop in [restricted term], comparable to a decade of natural aging. Sleep apnea similarly impairs [restricted term] and should be addressed.

Endocrine disruptors—chemicals in plastics, non-stick cookware, and various consumer products—can mimic estrogen, affecting [restricted term] and sexual function. While microplastics have been found even in reproductive tissues, the extent of harm remains under investigation. Dr. Malik recommends practical steps such as using metal water bottles and ceramic cookware to minimize exposure.

Social environment profoundly shapes sexual attitudes and practices. Peer groups that normalize dysfunction or dismiss the importance of sex lead to reduced prioritization of sexual health, while positive peer influence can increase safe sexual practices by 46%. Companionship with people who value relationships and speak positively about partners fosters healthier, more prioritized sex lives.

Media consumption patterns—not frequency—impact sexual health. Compulsive or guilt-driven pornography viewing can cause dysfunction, especially if used to escape negative emotions. Conversely, couples who comfortably watch together often enjoy higher satisfaction. Discordant attitudes toward porn within a couple, however, may pose challenges. For m ...

Erectile dysfunction (ED) is more than just a sexual health issue—it often serves as an early warning sign for broader cardiovascular and metabolic problems. Medical experts like Rena Malik underscore the importance of understanding ED as a symptom that can indicate underlying health challenges, especially those related to heart and vascular health.

Erectile Dysfunction as a Medical Warning Signal

Erectile Dysfunction: A Key Predictor of Future Cardiovascular Disease

Rena Malik refers to ED as "a canary in a coal mine." When ED is due to organic, rather than purely psychological reasons, it warns of potential cardiovascular issues developing within three to five years. Research shows that seven years after the initial onset of ED, 14% of affected men will experience a heart attack. She explains that problems with blood vessels—often first noticed in the penis—can foreshadow heart disease, strokes, or dementia before other symptoms arise. Comorbidities such as diabetes, high cholesterol, and hypertension further affect blood vessel health and contribute to ED. Steven Bartlett reiterates that the appearance of erectile dysfunction is often a sign of underlying cardiovascular problems.

When sexual function is normal—erections are easily achieved and sustained, arousal and orgasms occur without issue—it indicates that blood flow, nerve function, and hormonal signaling are healthy and intact.

Erectile Dysfunction Is the Failure to Maintain an Erection For Intercourse, Distinct From Premature Ejaculation Which Involves Climaxing too Quickly, and Losing an Erection Once or Twice Does Not Constitute Dysfunction

Malik defines ED as the inability to maintain an erection sufficient for intercourse; the erection may be lost before climax. This is distinct from premature ejaculation, where climax happens too soon even if the erection is otherwise maintained—these are separate conditions. Losing an erection once or twice is normal and does not constitute ED.

Morning Erections Indicate Vascular and Hormonal Health; Their Absence May Signal Cardiovascular or Hormonal Issues Needing Investigation

Regular morning erections suggest vascular and hormonal health. Their consistent absence can be a red flag for cardiovascular or hormonal imbalances that warrant further investigation.

Biological Factors Cause Erectile Dysfunction in Young Men, Not Just Psychological

A common misconception is that young men with ED must have psychological issues, but Malik points out that many young men develop ED due to biological causes as well. While robust data concern older men—52% of men over age 50 have ED, a rate that increases 10% each subsequent decade—ED in young men is not always purely psychogenic.

Treatment Approaches and Lifestyle Interventions

Sensate Focus Eases Performance Anxiety By Prioritizing Body Exploration Over Penetration

Non-pharmacological therapies such as sensate focus can help ease performance anxiety. This technique encourages men to focus on body exploration and sensation rather than penetration, reducing anxiety around performance and helping rebuild sexual confidence.

Distinguishing Erectile Dysfunction From Habitual Masturbation Is Vital Because Men Unable to Maintain Erections With Partners but Can During Pornography May Experience Arousal Habituation to Specific Stimulation They Can't Replicate With Partners

Malik emphasizes the importance of distinguishing erectile dysfunction from issues related to habitual masturbation or pornography use. Some men can maintain erections during masturbation with pornography but struggle with a partner because they may have become habituated to a specific visual or sensory stimulation that's not replicated in real-life sexual situations.

Penis Enlargement Surgery Often Causes Complications and Permanent Disfigurement, Making It Unadvisable for Men With Small Penis Anxiety

Surgery to lengthen the penis is rarely advised. Malik has seen patients, including those already above average, undergo such operations only to suffer from complications like scarring or permanent disfigurement. The penis is highly vascular and sensitive, making surgical alterations risky. Negative outcomes can permanently affect both function and appearance.

Traction Devices Safely Lengthen Penis By two Centimeters in 3-6 Months; Permanency Unknown

A safer alternative for those seeking penile lengthening is the use of traction devices. Research shows that using such a device for 30 minutes, twice daily, over three to six months can increase length by about two centimeters. These devices are generally safe, although the permanency of gains after stopping use remains unknown.

Jelqing, a Technique Promoted On ...

Female Reproductive Anatomy and Orgasm Pathways

Clitoris and Penis: Homologous Structures With Shared Embryonic Origins

Rena Malik uses a pelvic model to describe the female anatomy, highlighting the vagina, urethra, labia minora, and labia majora. She details the clitoris’s external glans and hood, explaining the hood is similar to the male foreskin. The clitoris extends internally with bulbs and legs, composed of erectile tissue homologous to that of the penis. Both structures share embryonic origins; what becomes the prostate in males develops into Skene’s glands in females, which sit beneath the urethra and also produce prostate-specific antigen (PSA), supporting their homology.

G-Zone: A Sensitive Area Inside the Anterior Vaginal Wall, Featuring Clitoral Tissue and Skene's Glands (Female Prostate Homologue)

Malik describes the so-called G-spot, properly referred to as the G-zone, as an area on the anterior vaginal wall about two centimeters inside the vagina. This region contains abundant nerve endings, clitoral tissue, and the Skene’s glands—homologous to the male prostate. Sensitivity in this zone can depend on the distance between the clitoris and the vaginal wall. Stimulation here can be pleasurable for many, but experiences vary widely.

Vaginal Length Doubles During Arousal, Accommodating Average 5.2 to 5.5-inch Penis

The unaroused vaginal length averages about 3.5 inches, but during arousal, the vagina expands and lengthens up to twice its resting size. This physiological change easily enables most women to accommodate the average erect penis, which measures approximately 5.2 to 5.5 inches, and even somewhat larger sizes.

Squirting Occurs In 40% of Women, Involving Fluid Emission From the Bladder and Skene's Glands, With Composition Changes During Arousal

Squirting happens in about 40% of women. The process involves the emission of fluid during orgasm, originating from both the bladder and the Skene’s glands. Squirting fluid often contains PSA and zinc, substances also present in male seminal fluid and notable for their antibacterial properties. Theories for squirting’s evolutionary role include potential urethral cleaning to prevent infections, egg release triggered by orgasmic surges, and serving as a mate selection mechanism by rewarding attentive partners. The composition of the fluid can change between the onset and the peak of arousal.

Female Orgasm and Squirting Aren't Directly Linked; Communication With a Partner Is More Reliable Than Physical Signs

Squirting is not synonymous with orgasm, nor does its absence mean a lack of orgasm. Malik stresses that the only reliable way to know if a partner has orgasmed is through direct communication, either through verbal confirmation or by asking, since physical signs can be ambiguous.

Male Reproductive Anatomy and Function

Average Erect Penis 5.2-5.5 Inches, Men Overestimate At 6-7 Inches, Women Buy Toys of Average Size

Studies show the average erect penis measures about 5.2 to 5.5 inches. However, men commonly overestimate, believing the average to be about 6 or 7 inches. When developing sex toys, particularly for trans people, research finds that women most often purchase toys that are also around this average size, validating what is commonly encountered.

There is no reliable external predictor of penis size, such as hand, foot, or even height, though a Japanese study suggested a potential link with nose length for that population.

Penis Size Can Appear to Decrease With Age Due to Fat Accumulation, While Tissue May Shrink From a Lack of Erections

Penis size may appear to "shrink" as fat accumulates over the pubic bone, obscuring exposed length. Genuine tissue shrinkage is possible with age, especially if regular erections (which supply healthy blood flow) are lacking—fitly summarized by the adage “use it or lose it.” Prolonged absence of nocturnal or sexual erections can lead to tissue fibrosis and eventual loss of erectile length.

Morning Erections Indicate Healthy Vascular and Hormonal Function due to Peak Early Morning [res ...

Contemporary lifestyles—dominated by digital devices, chronic stress, and shifting relationship norms—are significantly reshaping how people experience and pursue sexual intimacy. Rena Malik and Steven Bartlett discuss the confluence of these factors and their effects on desire, function, and relationship satisfaction.

Digital Distraction's Effect on Sexual Desire and Function

A profound increase in digital interaction among young adults aged 18-30 is changing sexual experiences. Data shows extreme users in this demographic spend eight to ten hours daily on their phones, social media, or the internet. About 15–20% of young people report virtually constant phone use, scrolling during meals, in the bathroom, and especially before sleep.

This perpetual stimulation impairs the brain’s ability to focus and transition into a mindset suited for sexual arousal and presence. Dopaminergic activities—from scrolling to streaming—train the nervous system to expect novel input every 60 seconds. When these patterns carry into the bedroom, people struggle to fully engage with their partners, experiencing sex as a mechanical act rather than a pleasurable or connected one. Minds wander to other tasks, distractions, or digital content, leading to "going through the motions" rather than authentic intimacy.

Screen time before bed intensifies these issues. The persistent blue light and information flow prevent the sympathetic nervous system from winding down, making it difficult to access the parasympathetic state that is essential for sexual arousal and function. Without the body’s natural ability to transition into relaxation, both desire and performance suffer, fueling a cycle of increasing stress and diminishing intimacy.

Stress, Sleep, and Nervous System Regulation

Sexual arousal relies on activation of the parasympathetic nervous system. Stress, marked by elevated cortisol levels, keeps the body in a sympathetic state: tense, vigilant, and ill-equipped for pleasure. Both Malik and Bartlett note the necessity of deliberately creating space and time for mental transition—especially after busy, stress-filled days.

Modern life schedules everything, pushing sex to the bottom of the list. Without intentional preparation or moments of affection throughout the day, desire becomes less spontaneous, particularly in long-term relationships. This transition from spontaneous to responsive desire requires cues—kind gestures, gratitude, gentle touch—that prime arousal.

Expectations of immediate sex can also generate anxiety. When one or both partners approach intimacy under pressure, particularly after stressful days or infrequent meetings, performance anxiety rises. This activates the sympathetic nervous system further, impeding erections and overall enjoyment. Inadequate or poor-quality sleep compounds the problem by depriving the body of restorative, parasympathetic rest, leading to lower sexual desire.

Sociocultural and Relationship Factors

Sociocultural changes, especially the rise of hookup culture and dating apps, mean first-time sexual experiences often occur between strangers. Lacking emotional connection or communication, these encounters are frequently mediocre or negative, discouraging ongoing pursuit of sex. Insufficient sex education leaves most young people to learn from performative, unrealistic pornography, promoting scenarios that rarely reflect enjoyable, con ...

[restricted term] Decline and Contributing Factors

[restricted term] levels in men have declined significantly over recent decades, with average readings dropping from about 600 ng/dl in the 1990s to 450 ng/dl by 2015. Rena Malik attributes this decline to increases in obesity, diabetes, and [restricted term] resistance, as well as the widespread consumption of ultra-processed foods. Higher body fat elevates aromatase activity, which converts [restricted term] into estrogen, further lowering [restricted term] levels and impairing metabolism. In addition, exposure to chemicals such as phthalates, BPAs, and PFAS, which mimic estrogen, can suppress natural [restricted term] production.

[restricted term] Replacement Therapy Versus Natural Optimization

[restricted term] therapy is recommended only for symptomatic individuals with confirmed low [restricted term], especially after attempting natural approaches. Malik stresses improving sleep, engaging in resistance training, and minimizing exposure to endocrine-disrupting chemicals as foundational steps. If someone remains symptomatic and has very low [restricted term] despite these efforts, replacement therapy can bring levels into the normal range but is not meant to result in super-physiological levels or bodybuilding outcomes.

Starting [restricted term] replacement has significant consequences. Once therapy begins, the body halts its own production, leading to testicular atrophy and requiring lifelong management. Discontinuation after long-term use often causes withdrawal symptoms and a marked decline in well-being as natural production remains suppressed. Increasing [restricted term] to super-physiologic levels (over 1800 ng/dl) raises the risk of blood thickening, blood clots, stroke, heart attack, and cardiac fibrosis due to collagen build-up in heart muscle, which impairs cardiac function.

Malik highlights that additional [restricted term] beyond receptor saturation does not translate into further benefits for mood, cognition, sexual health, or bone health, although muscle growth can still increase. Anabolic steroid misuse is especially dangerous—those using high doses for muscle gain face a 15-fold higher risk of premature heart failure and a 122-fold increased risk of cardiac death compared to individuals prescribed [restricted term] for medical reasons.

Fertility Impacts and Alternative Approaches

[restricted term] therapy severely impacts fertility: about 70% of men on therapy become infertile within 18 months, and sperm count can begin declining within ten weeks of use. While fertility typically returns one to two years after stopping therapy, the timeline depends on individual age and duration of use. Malik underscores the need for semen analysis as a health biomarker, as poor semen parameters are associated with higher mortality and shorter lifespans—healthy sperm generally reflect overall metabolic health.

Men wishing to optimize [restricted term] while maintaining fertility can consider medications like HCG, clomiphene, or enclomiphene. These drugs stimulate natural [restricted term] production by signaling the testicles to ramp up synthesis, of ...