Symptoms That Could Indicate Hyperthyroidism

Lisette Marie

15. Brittle Nails and Thinning Hair

Hands of a woman playing with nails in stress. Photo Credit: Envato @cait00sith

If your nails are peeling or breaking more easily—or your hairbrush seems fuller than usual—it could be more than just a change in the weather. Hyperthyroidism affects the body’s ability to absorb nutrients like biotin and iron, which are essential for strong nails and healthy hair. Over time, you may notice hair becoming fine, limp, or thinning around the crown and temples. Brittle nails that crack, split, or form ridges may also emerge. This seemingly superficial change is actually a key outward sign of inner hormonal chaos.

16. Voice Changes or a Hoarse Throat

Young asian woman having a cough, sore throat and suffering from cold in winter. Photo Credit: Envato @kitzstocker

As the thyroid gland enlarges (goiter), it can start to press against nearby structures in the neck—including the voice box. This may cause subtle voice changes, hoarseness, or even a feeling like you constantly have to clear your throat. Some patients describe it as a "tightness" or “tickle” in the throat, even in the absence of a cold. If your voice sounds different or you find yourself frequently hoarse, your thyroid could be playing a bigger role than you realize.

BACK

(8 of 16)

<div class="ads ads-1 collapse-container group-display-adsense unit-2024-desktop-rail-336x600-long zone-slideshow-desktop-rail-bottom">
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6736552601239305"
     crossorigin="anonymous"></script>

<ins class="adsbygoogle"
     style="display:inline-block;width:300px;height:600px"
     data-ad-client="ca-pub-6736552601239305"
     data-ad-slot="7087745678"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>
<script>
  addBlurHandler('sdr-bottom', function (el, zone) {
    if (cf_utm_source === 'bing') {
        uetqApi('outbound_click', {
            'event_category': 'PPC',
            'event_label': 'Adsense',
            'event_value': '1'
        });
        console.log('Fired bing.');
    }
	
	if (cf_utm_source === 'google') {
		gtag('event', 'conversion', {
			'send_to': 'AW-17008664059/yUYKCMCtl7kaEPu7rq4_',
			'value': 0.0,
			'currency': 'USD'
		});
    	console.log('Fired Google Conversion.');
	}
	
    console.log('Fired pixel.');
});
</script>
</div>

OpenAI Playground 2025-05-13 at 10.55.45.png

<div class="ads ads-1 collapse-container group-display-adsense unit-2024-desktop-rail-336x280-sticky zone-slideshow-desktop-rail-sticky">
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6736552601239305"
     crossorigin="anonymous"></script>

<ins class="adsbygoogle"
     style="display:inline-block;width:300px;height:280px"
     data-ad-client="ca-pub-6736552601239305"
     data-ad-slot="9869999824"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>
<script>
  addBlurHandler('sdr-sticky', function (el, zone) {
    if (cf_utm_source === 'bing') {
        uetqApi('outbound_click', {
            'event_category': 'PPC',
            'event_label': 'Adsense',
            'event_value': '1'
        });
        console.log('Fired bing.');
    }
	
	if (cf_utm_source === 'google') {
	  gtag('event', 'conversion', {
		'send_to': 'AW-17008664059/yUYKCMCtl7kaEPu7rq4_',
		'value': 0.0,
		'currency': 'USD'
	  });
	  console.log('Fired Google Conversion.');
  	}

console.log('Fired pixel.');
});
</script>
</div>

15. Brittle Nails and Thinning Hair

16. Voice Changes or a Hoarse Throat

MORE FROM HealthPrep