Skin cancer comes from the directness of the sun's rays, not from heat.
San Antonio and Houston are closer to the equator than Cairo is. Yeah, some of them will get skin cancer eventually, but mostly not until they're past reproductive age anyway.
Breh,
Modern people and people in Ancient Egypt, dress completely DIFFERENT.
Ancient Egyptians, and "Hebrew Slaves" in Egypt, would be damn near NAKED (and sometimes completely Naked) working.
Cario today, will reach an UV Index up to 10.1:
Today, Cairo's UV index is expected to reach 10.1, which means it's crucial to take extra care of your skin and protect it from harmful UV rays.
Leucoderm "White" skin starts burning at a UV Index of 3 and ABOVE.
Construction workers and Farmers/Agriculturist are among the highest risk of Skin Cancer.
Even today, with "Sun Block", and "Sun Protective" clothing, Construction workers and Farmers are STILL at a higher risk of skin cancer.
UV exposure is the number one reason for Skin cancer, and Skin Pigmentation:
There is a reason why the actual Indigenous "Europeans" had "Black" skin complexions .