The Science of Female Friendships: Why They Matter

THE UNIQUE SCIENCE OF FEMALE FRIENDSHIPS

Unlike friendships among men who often need a shared activity to connect, women typically root their connection in deeper emotional support. Women’s friendships have a distinct depth, shaped by biology and psychology.

These sociological differences make it a powerful protective factor that can combat anxiety, depression, and even cognitive decline. It’s one of the reasons why women need strong friendships.The Role of Oxytocin in Female Bonding

Oxytocin, often called the “bonding hormone,” plays a key role in female friendships. When women engage in meaningful social interactions, their oxytocin levels rise and create feelings of trust, connection, and stress relief among each other.

A 2021 study published in The International Journal on the Biology of Stress found that oxytocin may have cardio-protective effects for women due to it reducing cortisol levels, calming the parasympathetic nervous system, and stabilizing the emotional regions of the brain.

                  Related: Oxytocin: 13 Natural Ways to Increase the Love Hormone

The “Tend-and-Befriend” Response

Women’s natural inclination to seek social bonds in times of stress is known as the “tend-and-befriend” response, a term coined by researchers at UCLA. Instead of withdrawing or reacting aggressively under stress, women instinctively nurture others and form alliances within their communities.

This behavior acts as a buffer against anxiety and depression while also finding solutions for certain circumstances. Both biological mechanisms show the benefits of female friendships for emotional well-being and mental stability.

H2. Female Friendships and Mental Health

If you want to know how friendships improve mental health, look at the brain. Beyond emotional support, friendship strengthens social connections and mental health in women by triggering the release of dopamine and serotonin—the neurotransmitters responsible for feelings of happiness and contentment. This explains why spending time with close friends has a mood-boosting effect comparable to physical exercise.

In addition to promoting happiness, having female friends also serves as a protective factor against cognitive decline. As women make up nearly two-thirds of Alzheimer’s cases in the U.S., it’s important to study what can mitigate and prevent the cause of this neurodegenerative disease. Women who maintain strong and intentional friendships are more likely to stay mentally sharp as they age.

                  Related: Alzheimer’s is a Lifestyle Disease

These friendships also provide an essential outlet to regulate emotions during times of stress. Consistently sharing deep thoughts, fears, and frustrations with a trusted friend allows women to process emotions more effectively, reducing the risk of developing stress-related disorders.

Research shows that social engagement in midlife significantly reduces the risk of dementia by 38% and mild cognitive impairments by 21% in later years. This aspect of any friendship is particularly important in modern society where chronic stress and mental health challenges are on the rise and not slowing down anytime soon.

H2. THE HEALTH BENEFITS OF STRONG FRIENDSHIPS

One of the most compelling findings in social science is that women with close social connections tend to live longer than those who experience isolation. These friendships also contribute to stronger immune function and disease resistance.

Here are some of the ways strong female friendships can improve overall health:

It Lowers the Risk of Depression

Studies show that women with strong social support networks are less likely to experience or at least reduce the effects from depression, anxiety, and PTSD. This is important as loneliness can increase your risk of certain mental health disorders.

Better Heart & Immune Health

Loneliness and social isolation significantly increase health risks, according to research in the journal Heart. Having weak social connections increased the risk of coronary heart disease by 29% and stroke by 32%.

Women with strong friendships tend to have better cardiovascular health, as meaningful connections help reduce feelings of loneliness, lower blood pressure, and support better heart function.

Longer Life Expectancy

It turns out that friendships can increase longevity due to the ability to reduce cortisol levels from chronic stress and promote emotional resilience through better communication. There’s also research behind having a strong emotional support system during difficult times that shows it provides improved stress resilience.

THE ROLE OF FRIENDSHIPS IN DIFFERENT LIFE STAGES

Something else to keep in mind with female friendships is that they evolve throughout different phases of life. The unique forms of support in each stage can determine everything from health outcomes to how well you handle unexpected life events.

• Young adulthood: This is when friendships help shape identity and provide a critical source of emotional support as women navigate career choices, relationships, and personal growth.
• Motherhood: If women choose motherhood, the role of friendship can be even more significant as many new mothers experience isolation. Research shows this is where female friendships become a crucial lifeline for emotional validation and understanding beyond the typical tasks of parenting.
• Midlife and menopause: These friendships act as a stabilizing force with support during hormonal changes, later career transitions, and often shifting family dynamics.
• Later in life: Friendships become an essential safeguard against loneliness and depression. In one study, older women with close friendships reported higher personal satisfaction and less likely to experience cognitive decline and tend to have a higher quality of life compared to those who are socially isolated.

THE DARK SIDE: WHEN FEMALE FRIENDSHIPS BECOME TOXIC

There’s a reason why friendships are important for women’s health, but it’s important to be aware that not all social bonds are healthy. Toxic friendships can be emotionally draining and socially isolating in and of themselves.

Press Play for More on Toxic Relationships

Hosted by Dr. Daniel Amen and Tana Amen, this episode of the Change Your Brain Every Day podcast reveals what can turn a good friendship into a toxic relationship.

Click below to tune in.

10 Ways to Ruin Your Relationships.

Recognizing the warning signs of an unhealthy friendship to protect your mental health can be tough. Some red flags of a toxic friendship can include:

• A constant feeling of emotional drain after interactions
• Experiencing manipulation or controlling behavior
• Ignoring emotional and physical boundaries
• Gossiping or speaking ill of you with others
• A lack of effort, or one-sided connection, in maintaining the friendship

These kinds of negative social interactions can increase cortisol levels and prolong emotional distress. Setting healthy boundaries is essential when dealing with toxic friends. As women, that can be more difficult as that “tend-and-befriend” response kicks in.

Prioritizing mental health means recognizing when a relationship is doing more harm than good, so don’t be afraid to address the issue or step away from an unhealthy friendship altogether. Learning to avoid toxic friendships is critical to your mental health.

HOW TO STRENGTHEN AND MAINTAIN FEMALE FRIENDSHIPS

Maintaining healthy friendships should be one of your top priorities in life. Making an intentional effort to nurture your relationships benefits your mental and physical health.

One of the simplest yet most effective ways to strengthen friendships is through regular communication. Even small check-ins, such as a thoughtful text or a quick chat over the phone, can reinforce emotional bonds.

Consistency is key and fosters trust and connection over time. Another way is through small acts of kindness, such as sending a supportive message or planning a casual get-together to deepen your friendship. 

Research shows that building new adult relationships can be challenging, but it is possible and wholly beneficial. If you’re looking to expand your social circle, think about joining community groups, book a class, or go to a club focused on a shared hobby. You can also participate in fun local events to create opportunities to form meaningful connections.