Food additives, stress, nutrient deficiencies, diet, air pollution, soil lead, pesticides, water contamination, wifi, background radiation, vaccines, phone signals
These are all perfectly viable candidates for 100s of immediate issues
The problem is that every 'study' looks at all possible factors completely independently and over short periods of time
What it never does is look at combined factors on a generational level, which would consistently show a direct correlation between the above and general physical and mental health spanning all categories, and obligate a specific goal to overturn a literally toxic society....which would lead to big losses in profits