Sugar triggers a process called glycation, where sugar molecules bind to collagen and elastin, making them stiff and less elastic—leading to wrinkles and sagging skin.
High sugar levels can spike insulin, which increases oil production and inflammation, both of which can trigger or worsen acne breakouts.
Sugar promotes chronic inflammation, which may aggravate skin conditions like eczema, psoriasis, or rosacea.
Spikes in blood sugar can reduce circulation over time, leading to less oxygen and nutrients reaching the skin, making it appear dull and tired.
A high-sugar diet can impair the skin's ability to repair itself, slowing down the healing of blemishes or wounds.