Why am I always cold?

Usually my hands are always significantly cooler than the rest of my body and I've gotten used to the fact that they're normally cold. But recently, I've found that I'm overall colder than normal. It's been around 70+ degrees lately and I've been wearing hoodies, sweatpants, and have been wearing throw blankets on top of that around the house. Why am I suddenly cold constantly? It have to say it just began a few weeks ago and now I'm having a hard time shaking the chill.
Why am I always cold?
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