A: In people with Hashimoto's it is common to have cold intolerance. I do have an article about that titled Thyroid and Cold Intolerance!
You can utilize some soups instead of smoothies. Also, you can try gently steaming the vegetables instead of using them raw from the fridge, and adding warming spices like ginger and cinnamon can also help “warm” the smoothie up.
Here are more tips for you:
You want to ensure that your thyroid panel is within range. Optimizing your TSH, which is best between 0.5 and 2 for most people; looking at your levels of free T3 and free T4 to make sure those are in the upper half of the reference range. I do have that information on the optimal labs for you in this article on my website.
Sometimes some people find that they are on thyroid hormones but they're just not converting properly, and that could lead to cold extremities. Another reason is due to the adrenals. Therefore, everything we're doing in the Adrenal Transformation Program should definitely help.
You want to make sure that you keep your body warm and keep your home warm. Keep your body warm by making sure you're wearing enough clothing, and give yourself plenty of rest.
Then there are also things you can do externally to warm up, such as a hot bath, saunas, and foot soaks can be helpful. Also, eating thermogenic foods like avocados and good fats, or warm foods like bone broth and stews throughout the winter might help. This can be incredibly helpful to give your body a little bit of a break from having to generate its own heat.