Just wondering if anyone with cold hands has taken Kelp supplements (contain Iodine)? It's something to try to rule out Iodine deficiency.
"Chronically dry and cracking lips could be a sign of Iodine deficiency. You won’t find this in a textbook, and there’s no research to back me up on it, but I have seen Iodine correct dry lips virtually overnight. The first time I noticed it was in my former assistant who used to drink all the bottled water in the office in a futile attempt to moisten her lips. When I found out that she also happened to be cold all the time it occurred to me that she might need iodine. Sure enough the day after she took her first iodine pill she told me her lips felt smoother. She continued to take it every day and, a few weeks later, she also commented that she wasn’t as cold any more. Since then I have seen similar results many times.
If your lips are not particularly dry, but you experience recurrent cracking and even bleeding at the edges between the upper and lower lips, you have a well-known and researched sign of vitamin B2 (riboflavin) deficiency."