How SPF Affects Hormones

Seemingly an unlikely pairing, hormones and sunscreen are connected through the intricate working of our bodies and the impact certain chemicals have on our endocrine system. GP, Functional Medicine, and Hormone Doctor Sohere Roked discusses the influence of specific chemicals found in some sun protection formulations that can disrupt hormone harmony.

Seemingly an unlikely pairing, hormones and sunscreen are connected through the intricate working of our bodies and the impact certain chemicals have on our endocrine system. 

Some chemicals in sunscreen have been identified as endocrine disruptors, meaning they can interfere with the normal functioning of hormones in the body; For example, oxybenzone, a common ingredient in sunscreens, has been shown to mimic oestrogen in the body and may disrupt hormone balance. Hormones like oestrogen and progesterone play crucial roles in various bodily functions, including reproductive health, metabolism and even mood regulation. Disrupting the balance of these hormones can lead to a range of health issues; from fertility problems, thyroid disorders, to certain cancers. 

Sun exposure can also affect hormone levels as sunlight helps regulate the production of vitamin D, the hormone that plays a critical role in calcium absorption, bone health and immune function, and while sun exposure is essential for vitamin D production (as a vitamin D deficiency has been linked to autoimmune diseases and cardiovascular disease); sunscreen is vital to help protect the skin from harmful UV rays to reduce the risk of sunburn, premature ageing, and skin cancer. 

This is why it is essential to choose your sunscreen wisely and be aware of which chemical ingredients may affect your hormonal balance and rather opt for an SPF with safer ingredients to minimise any potential disruption to your endocrine system while still providing effective sun protection.