So, what does it really mean to be bisexual? The answer can vary. Sexual orientation involves a person’s identity, attractions, and behaviors. Researcher Miller and colleagues define bisexuality as:
“The emotional, romantic, or physical attraction to more than one sex or gender.” According to population-based studies in the United States, approximately 1.8% of people identify as bisexual. In other countries such as Australia, Canada, Norway, and the United Kingdom, estimates range from 0.5% to 1.2%, based on national surveys. However, these numbers may not reflect everyone, as many more people report attraction to more than one gender or having had sexual experiences with both men and women.
Studies also show that bisexual individuals are at a higher risk for certain mental health and sexual health issues compared to monosexual individuals (those who are only gay or only straight). These risks often arise due to social stigma, discrimination, and lack of acceptance.
- Mental Health and Bisexuality
According to ongoing research and surveys, bisexual individuals experience higher rates of mental health issues compared to people who identify as either exclusively heterosexual or homosexual (monosexual individuals).
For instance, bisexual women show a 58.7% rate of mood disorders and a 57.8% rate of anxiety disorders. In comparison, lesbian women report 44.4% mood disorders and 40.8% anxiety, while heterosexual women report 30.5% mood disorders and 31.3% anxiety. Similarly, bisexual men are also more prone to stress and anxiety than those who identify as heterosexual or homosexual.
- Sexual Health and Bisexuality
Sexual health concerns for bisexual individuals often focus on HIV and other sexually transmitted infections (STIs), especially among bisexual men.
A recent study concluded that bisexual men are at higher risk of contracting HIV than heterosexual men. However, it’s worth noting that a larger percentage of HIV-related deaths occur among heterosexual men. Bisexual men are more likely to engage in high-risk sexual behaviors, such as:
- Having multiple sexual partners
- Engaging in condomless sex
- Using intoxicants before sex
One study revealed that bisexual African American women had twice the risk of being infected with Herpes Simplex Virus Type 2 compared to heterosexual African American women (54% vs. 26%). Another study also found that bisexual women are more likely to contract STIs compared to lesbian and queer women.
Source: NIH - PMC Article

(Read more –Homosexuality: what is it, modern history)