Complex sentence: Oz's image and quotes have also been used in many weight loss product scams, although he himself has not been found to be involved in these scams, nevertheless his critics claim that he frequently makes statements that can be exploited by scammers.
Split into simpler sentences: Oz's image and quotes have also been used in many weight loss product scams. While he himself has not been found to be involved in these scams, critics claim that he frequently makes statements that can be exploited by scammers.