New research has linked the changes to a 60% increased likelihood of developing the condition.
Some call its imitators "sourfaux" and have said it may not have the benefits of the real thing.
HuffPost UK spoke with the UK Health Security Agency for guidance.
You're not alone, a dermatologist says.
Plus, other tips to protect your teeth.
"It's based on pseudo-science," the doctor said.
This is when to worry about any changes.
It can also affect your teeth.
It can sometimes be a sign of an adrenal condition.
Older people in particular may need to pay attention to their intake.