People with hypothyroidism may want to consider minimizing their intake of gluten, a protein found in foods processed from wheat, barley, rye, and other grains, says Ruth Frechman, RDN, a dietitian and nutritionist in the Los Angeles area and a spokesperson for the Academy of Nutrition and Dietetics.
Yellow Nails. One of the most common causes of yellow nails is a fungal infection. As the infection worsens, the nail bed may retract, and nails may thicken and crumble. In rare cases, yellow nails can indicate a more serious condition such as severe thyroid disease, lung disease, diabetes or psoriasis. Swipe to advance.
The first is nail fungus and the second is a condition called nail dystrophy. Nail dystrophy is a thickening of the nails caused by repeated micro-trauma to the nail, for example from the nail hitting the top of the shoe over many years. The most common causes of thick, yellowed and ugly nails include: Nail fungus.