An accumulation of free radicals due to an unhealthy diet of processed foods causes cellular damage & results in bags under the eyes, wrinkles, droopy eyelids & loss of skin elasticity.  Puffy eyes are also caused by the weakening of muscles supporting the eyelids & the fat that supports the eyes movement of the lower eyelids, making them look puffy & swollen. Some of the other causes for saggy & puffy eyes are as follows: