While junk food won't age overnight, continuous indulgence in junk food can speed up aging. People typically require approximately 75 grams of fat a day, but significantly more than this may result in clogged blood vessels. Consuming more fat can result in sticky artery walls. This prevents oxygenated blood from reaching essential organs. No oxygen means damaged skin cells. It also prevents repair. As a result, excessive consumption of junk food means an unhealthy body, and this results in health problems that make your skin look tired.

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