Is sunscreen bad

Sunscreen, while critical for protecting against melanoma and skin damage, can have concerning ingredients. Andrew Huberman has expressed reservations about certain chemical sunscreens, which may contain endocrine disruptors and other harmful compounds that could be risky, especially when they penetrate the skin and potentially cross the blood-brain barrier. These concerns are especially relevant regarding the safety of neurons, which largely do not regenerate throughout life 1. He emphasizes the safety of physical barrier sunscreens, like those containing minerals, which act by reflecting UV light and are less likely to cause endocrine disruption 2.

Therefore, it's important to choose sunscreens carefully, favoring those with safe physical blocking ingredients like zinc oxide or titanium dioxide over those with potentially harmful chemical absorbers.