Summer is nearly here. But rather than getting out the sunscreen, some TikTokers are urging followers to chuck it out and go sunscreen-free.

They claim it’s healthier to forgo sunscreen to get the full benefits of sunshine.

Here’s the science really says.

How does sunscreen work?

Because of Australia’s extreme UV environment, most people with pale to olive skin or other risk factors for skin cancer need to protect themselves. Applying sunscreen is a key method of protecting areas not easily covered by clothes.

Sunscreen works by absorbing or scattering UV rays before they can enter your skin and damage DNA or supportive structures such as collagen.

When UV particles hit DNA, the excess energy can damage our DNA. This damage can be repaired, but if the cell divides before the mistake is fixed, it causes a mutation that can lead to skin cancers.

The most common skin cancers are basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). Melanoma is less common, but is the most likely to spread around the body; this process is called metastasis.

Two in three Australians will have at least one skin cancer in their lifetime, and they make up 80% of all cancers in Australia.

Around 99% of skin cancers in Australia are caused by excessive exposure to UV radiation.

Excessive exposure to UV radiation also affects the appearance of your skin. UVA rays are able to penetrate deep into the skin, where they break down supportive structures such as elastin and collagen.

This causes signs of premature ageing, such as deep wrinkling, brown or white blotches, and broken capillaries.

Sunscreen can help prevent skin cancers

Used consistently, sunscreen reduces your risk of skin cancer and slows skin ageing.

In a Queensland study, participants either used sunscreen daily for almost five years, or continued their usual use.

At the end of five years, the daily-use group had reduced their risk of squamous cell carcinoma by 40% compared to the other group.

Ten years later, the daily use group had reduced their risk of invasive melanoma by 73%

Does sunscreen block the health-promoting properties of sunlight?

The answer is a bit more complicated, and involves personalised risk versus benefit trade-offs.

First, the good news: there are many health benefits of spending time in the sun that don’t rely on exposure to UV radiation and aren’t affected by sunscreen use.

Sunscreen only filters UV rays, not visible light or infrared light (which we feel as heat). And importantly, some of the benefits of sunlight are obtained via the eyes.

Visible light improves mood and regulates circadian rhythm (which influences your sleep-wake cycle), and probably reduces myopia (short-sightedness) in children.

Infrared light is being investigated as a treatment for several skin, neurological, psychiatric and autoimmune disorders.

So what is the benefit of exposing skin to UV radiation?

Exposing the skin to the sun produces vitamin D, which is critical for healthy bones and muscles.

Vitamin D deficiency is surprisingly common among Australians, peaking in Victoria at 49% in winter and being lowest in Queensland at 6% in summer.

Luckily, people who are careful about sun protection can avoid vitamin D deficiency by taking a supplement.

Exposing the skin to UV radiation might have benefits independent of vitamin D production, but these are not proven. It might reduce the risk of autoimmune diseases such as multiple sclerosis or cause release of a chemical that could reduce blood pressure. However, there is not enough detail about these benefits to know whether sunscreen would be a problem.

What does this mean for you?

There are some benefits of exposing the skin to UV radiation that might be blunted by sunscreen. Whether it’s worth foregoing those benefits to avoid skin cancer depends on how susceptible you are to skin cancer.

If you have pale skin or other factors that increase you risk of skin cancer, you should aim to apply sunscreen daily on all days when the UV index is forecast to reach 3.

If you have darker skin that rarely or never burns, you can go without daily sunscreen – although you will still need protection during extended times outdoors.

For now, the balance of evidence suggests it’s better for people who are susceptible to skin cancer to continue with sun protection practices, with vitamin D supplementation if needed.

Katie Lee, PhD Candidate, Dermatology Research Centre, The University of Queensland and Rachel Neale, Principal research fellow, QIMR Berghofer Medical Research Institute

This article is republished from The Conversation under a Creative Commons license. Read the original article.

In the aftermath of the tragic Bondi knife attack, Joel Cauchi’s parents have spoken about their son’s long history of mental illness, having been diagnosed with schizophrenia at age 17. They said they were “devastated and horrified” by their son’s actions. “To you he’s a monster,” said his father. “But to me he was a very sick boy.”

Globally, one out of every eight people report a mental illness. In Australia, one in five people experience a mental illness in their lifetime.

Mental illness and distress affects not only the person living with the condition, but family members and communities. As the prevalence of mental health problems grows, the flow-on effect to family members, including caregivers, and the impact on families as a unit, is also rising.

While every family is different, the words of the Cauchis draw attention to how families can experience distress, stress, fear, powerlessness, and still love, despite the challenges and trauma. How can they help a loved one? And who can they turn to for support?

The role of caregivers

Informal caregivers help others within the context of an existing relationship, such as a family member. The care they provide goes beyond the usual expectations or demands of such relationships.

Around 2.7 million Australians provide informal care. For almost a third of these the person’s primary medical diagnosis is psychological or psychiatric.

It has long been acknowledged that those supporting a family member with ongoing mental illness need support themselves.

In the 1980s, interest grew in caregiving dynamics within families of people grappling with mental health issues. Subsequent research recognised chronic health conditions not only affect the quality of life and wellbeing of the people experiencing them, but also impose burdens that reverberate within relationships, caregiving roles, and family dynamics over time.

Past studies have shown families of those diagnosed with chronic mental illness are increasingly forced to manage their own depression, experience elevated levels of emotional stress, negative states of mind and decreased overall mental health.

Conditions such as depression, anxiety disorders, bipolar disorder, and schizophrenia can severely impact daily functioning, relationships, and overall quality of life. Living with mental illness is often accompanied by a myriad of challenges. From stigma and discrimination to difficulty accessing adequate health care and support services. Patients and their families navigate a complex and often isolating journey.

The family is a system

The concept of family health acknowledges the physical and psychological wellbeing of a person is significantly affected by the family.

Amid these challenges, family support emerges as a beacon of hope. Research consistently demonstrates strong familial relationships and support systems play a pivotal role in mitigating the adverse effects of mental illness. Families provide emotional support, practical assistance, and a sense of belonging that are vital for people struggling with mental illness.

My recent research highlights the profound impact of mental illness on family dynamics, emphasising the resilience and endurance shown by participants. Families struggling with mental illness often experience heightened emotional fluctuations, with extreme highs and lows. The enduring nature of family caregiving entails both stress and adaptation over an extended period. Stress associated with caregiving and the demands on personal resources and coping mechanisms builds and builds.

Yet families I’ve interviewed find ways to live “a good life”. They prepare for the peaks and troughs, and show endurance and persistence. They make space for mental illness in their daily lives, describing how it spurs adaptation, acceptance and inner strength within the family unit.

When treating a person with mental illness, health practitioners need to consider the entire family’s needs and engage with family members. By fostering open and early dialogue and providing comprehensive support, health-care professionals can empower families to navigate the complexities of mental illness while fostering resilience and hope for the future. Family members express stories of an inner struggle, isolation and exhaustion.

Shifting the focus

There is a pressing need for a shift in research priorities, from illness-centered perspectives to a strengths-based focus when considering families “managing” mental illness.

There is transformative potential in harnessing strengths to respond to challenges posed by mental illnesses, while also supporting family members.

For people facing mental health challenges, having loved ones who listen without judgement and offer empathy can alleviate feelings of despair. Beyond emotional support, families often serve as crucial caregivers, assisting with daily tasks, medication management and navigating the health-care system.

As the Cauchi family so painfully articulated, providing support for a family member with mental illness is intensely challenging. Research shows caregiver burnout, financial strain and strained relationships are common.

Health-care professionals should prioritise support for family members at an early stage. In Australia, there are various support options available for families living with mental illness. Carer Gateway provides information, support and access to services. Headspace offers mental health services and supports to young people and their families.

Beyond these national services, GPs, nurses, nurse practitioners and local community health centres are key to early conversations. Mental health clinics and hospitals often target family involvement in treatment plans.

While Australia has made strides in recognising the importance of family support, challenges persist. Access to services can vary based on geographic location and demand, leaving some families under-served or facing long wait times. And the level of funding and resources allocated to family-oriented mental health support often does not align with the demand or complexity of need.

In the realm of mental illness, family support serves as a lifeline for people navigating the complexities of their conditions.

If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.

Amanda Cole, Lead, Mental Health, Edith Cowan University

This article is republished from The Conversation under a Creative Commons license. Read the original article.