4. Excessive Dieting

Going on a crash diet causes havoc in the metabolic system. A healthy balance of nutrients and essential minerals is imperative for proper functioning of the body. Intake of fast food followed by going on starvation mode depletes the vitamin and mineral levels in your system causing metabolic changes that negatively affect health.
If you want to lose weight, lose it the healthy way by having a well-balanced intake of good quality food every day. Increase the amount of greens and lean protein in your diet while cutting down on starch and red meat. This should suffice in helping you reduce weight without negatively affecting your health or appearance.