https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468901/pdf/nutrients-12-02237.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468901/pdf/nut... “Sensible sun e

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468901/pdf/nutrients-12-02237.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468901/pdf/nut... “Sensible sun exposure” is the practice of obtaining the minimum sun exposure required for adequate vitamin D synthesis followed by application of sunscreen or clothing coverage; and is often characterized as sun exposure of 5–30 min, two–three times per week to the arms, legs and torso during 10:00 h to 15:00 h [2,30]. The specific duration required within this time frame is dependent on skin type, previous tanning, latitude, season and environmental conditions. The minimal erythemal dose (MED), or the minimum quantity of UVB that induces a slight erythema 16–24 h post exposure, is a common dosage employed for sensible sun exposure guidelines [31]. The standard erythemal dose (SED) is a standardized method for quantifying erythemal UV radiation (UVR) dose and is becoming more commonly used because the MED varies from person to person even within the same skin type. The SED is defined as 100 J/m2 [32]. For adults with a fair complexion, one MED is equal to about 10–12 min of full body exposure during peak summer sun for all skin types [33]. One MED may be considered equivalent to ~2.5 to 3.5 SEDs depending on skin type [34].