Keto Ultra Diet still unknown. This makes grapefruit ideal to include in any weight loss plan. The bad? Replacing too many meals with grapefruit can cause you to create a mineral deficiency. Any diet that has you eating the same food every day will make it hard for your body to accumulate the array of vitamins and minerals it need to thrive. While you should include grapefruit into your weight loss plan for women, make sure you are eating many other foods throughout the day. I hope this helps clear up some confusion about some popular diet plans out..