What causes wrinkled peeling fingertips? If you have fingertips peeling and wrinkling, you could be suffering from nerve insufficiency, occupational exposure or even diabetes. Peeling is one of the most common signs, usually visible on the toes and fingers.
Hypothyroidism occurs when your thyroid does not produce enough hormones, which can result in a slow metabolism marked by weight gain, fatigue and sluggishness. If you gain weight, your body will not effectively make energy from food and may contribute to a slowed metabolism.
Well, maybe yes, but probably no. Our bodies are well-tuned to keep things at status quo. If anything, our metabolism may go up when we're cold, as our bodies need to work harder to maintain our temperature (by shivering). In the heat, our bodies actually slow down a bit to try to conserve energy so as not to overheat.