Nestl, the Switzerland-based food and supplement manufacturer, is taking a two-pronged approach
The solution should be clear and free of particulate matter
Focus on lean proteins, complex carbohydrates, and vegetables
In cases of diagnostic uncertainty, additional tests such as holotranscobalamin or methylmalonic acid may be considered
This can lead to a cycle of restriction and overeating that mimics the yo-yo dieting many people are trying to escape
Moreover, from known examples, they are quite variable among GST classes which likely explain the diversity of substrates accommodated by the different GSTs but may at the same time also explain the lack of specificity among certain classes for some substrates (Wilce and Parker, 1994