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6. Nervousness and Fast Heartbeat
Nervousness and fast heartbeat are also signs of autoimmune disease. There are multiple autoimmune diseases that cause your body to utilize more energy than it should and boost your metabolism rapidly. Grave’s disease, in particular, is a secondary effect that has a negative impact on the thyroid glands.
Unlike many thyroid disorders, grave’s disease pushes the thyroid glands to produce an excessive amount of hormones. Having less or more hormones than what the body needs is unhealthy and will cause further issues. As more hormones are produced, more energy is used and it often leads to nervousness, rapid heartbeat, hyperventilation, heat sensitivity, and sudden loss of weight.
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