Is topless sunbathing safe for your health? Here's what science has to say

In the middle of summer, the dilemma of whether or not to tan topless arises for many women. Alongside concerns about looks and social norms, there's an essential question: what's the impact on our health? Today, science is offering us some answers.

DNA methylation: a marker of biological age

According to scientific studies led by Steve Horvath of the UCLA School of Medicine, DNA methylation can be analysed as a potential biomarker of cellular age. This method was applied to 8,000 healthy samples of 51 different cell types and tissues and generally established a precise link between biological age and the chronological age of the patient.

To gain a better understanding, the scientists analysed whether, at the official age of 30, 40, or 50, our epidermis, on different parts of the body, displayed a corresponding biological age.

And it's a real revolution in our understanding of cellular ageing. In fact, not all areas of your epidermis age in the same way, and unsurprisingly, exposure to the sun can have consequences.

Not all tissue ages in the same way

Analysis of the ageing of different tissues reveals surprising variations. For example, healthy breast tissue in women is around two to three years older than the rest of their body. Cancer cells, on the other hand, age even more rapidly, with an acceleration of tissue ageing in tumours.

It should be noted that healthy breast tissue in the vicinity of breast tumours is on average 12 years older than tissue elsewhere in the body. This fact may have major implications for the prevention and treatment of breast cancer.

Topless tanning: a risky move?

Sunbathing topless is a common practice and sometimes even a political battle. While the desire to avoid tan lines is understandable, the importance of adequate sun protection should not be underestimated.

Without sun protection, UVA and UVB rays can have devastating effects on your skin and your health, and accelerate skin ageing.

The skin on the breasts is particularly sensitive and requires the use of sunscreen with a high SPF and frequent reapplication.

Overexposure to the sun can lead to hyperpigmentation, wrinkles, age spots and potential cancer. It is therefore advisable to seek shade and avoid exposure to the sun during the hours when the sun is at its highest point (12 pm - 3 pm), and to reapply sunscreen every 1 to 2 hours. In addition, stay hydrated when out in the sun to avoid dehydration.

The benefits of a moderate tan

It is important to note that tanning, when practised in moderation, has health benefits. Proper tanning provides vitamin D, which is beneficial for bone health, blood pressure and the immune system.

So, yes, topless sunbathing is possible, but it has to be done with care. Never forget your sun cream, keep well hydrated and enjoy the sun in complete safety!

This article is translated from Gentside FR

Sources used:

Research Gate: 'DNA methylation clock DNAmFitAge shows regular exercise is associated with slower aging and systemic adaptation'