keto pure medicine He said the diet also makes people feel full despite having fewer calories and it gives them more energy. That’s because, he said, people are giving up their sluggish diet of processed foods. He added the keto diet keeps blood sugar levels stable, which produces a more stable flow of energy. Mawer notes there are some drawbacks. He said the diet would not necessarily improve athletic performance, a fact that may discourage some athletes.He added people need to adhere closely to the program or it will not work.“It is a very strict diet,” said Mawer. “You have to do everything right.