7-Dehydrocholesterol has significant absorption of UV light at the lowest wavelengths of light found in sunlight (290-310 nm). Hence the need for full-spectrum lamps to emit UV-B radiation (UV-B light is defined here to be light between 290-315 NM).
In rare cases some vegans might not get enough fat or calories to produce adequate amounts of steroid hormones (which are produced from cholesterol). Two studies have shown vegans to have sex hormones on par with meat-eaters (1, 2), but one report showed vegan women to have lower levels of estrogen (3).
One of the biggest misconceptions about a vegan diet plan is that you need to eat lots of nuts and seeds for protein. While there is protein in nuts and seeds, that's not my main reason for eating them. There are 2 seeds that I eat every day, for some really important nutrients.hey do also have protein, but because you only need a couple of tablespoons of nuts or seeds to pack in a couple hundred calories, they should really be kept in moderation.