With no obvious symptoms that scream ‘Subclinical hypothyroidism’, it may not appear as serious as it actually is.
But according to a recent study in the journal Risk Management and Healthcare Policy it’s negatively affecting one thing you really need each day!
Sleep is essential and if you’re sleep deprived, it has a serious knock-on effect on everything, especially your health.
Chinese scientists recruited 2,224 subjects with subclinical hypothyroidism and 12,622 people with normal thyroid function. They asked them to complete the Pittsburgh Sleep Quality Index, a common questionnaire used by scientists to assess the amount of sleep and sleep quality.
The results showed that those with hypothyroidism had 12 percent greater chance of having a poorer sleep quality, 16 percent higher chance of having difficulties falling asleep, and 14 percent chance of being more likely to not have enough sleep.
Taking a long time before falling asleep and waking up way too early are the two main forms of insomnia.
Interestingly, the largest relationship between hypothyroidism and poor sleep was seen in younger women and in people with lower body mass index scores.
One possible reason for this relationship is that the thyroid-stimulating hormone and the thyroid hormone have a circadian rhythm, very much like your body has. If these cycles are out of sync, it can affect your sleep.
Scientists also believe that hypothyroidism somehow disrupts slow-wave sleep. If you have hypothyroidism, your metabolism slows down, which slows your body down.
Another possibility is there is an estrogen and progesterone imbalance, which causes both hypothyroidism and insomnia.
Whatever the reason, you should try to normalize your thyroid function if you want to improve your sleep quality.