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Do FDA regulations make US sunscreens less effective than international products? Unlike the EU, FDA regulations do not dictate standards or minimum requirements for UVA protection in sunscreen. Also unlike the EU, labeling relevant to UVA protection is not required (though allowed). The answer on the sister-site (Outdoor.SE) as well as the other three ...


13

Summary The question as asked in the title depends on what you consider "strong evidence". I will therefore have a look at which side makes the better-sourced point. (Which is not just about "protecting people with damaged airways", but several other health effects as well.) One side -- the Umweltbundesamt -- gave references to studies the decision was ...


11

Avery gave you a list of "yeses" by moving the goal posts to an issue of organics vs non-organic modern agriculture. Here's a peer-review no to the actual question of historical decline: https://doi.org/10.1016/j.jfca.2016.11.012 It's a study by an employee of Canada's Bureau of Nutritional Sciences Mineral nutrient composition of vegetables, fruits ...


3

Plausible, but under-researched. Lawrence Berkeley National Laboratory has this to say about UV germicidal irradiation (UVGI): There have been few published studies of the health benefits of applying UVGI systems in ducts of HVAC systems outside of health care facilities. In a study within three office buildings [50], UVGI systems were turned on and off ...


2

The massive decline in plant compounds is attested by many studies, but I take it that your concern is whether this is linked to problems in human nutrition. The current answer is that there is not enough research on this subject. Reeve, J. R., et al. "Organic farming, soil health, and food quality: considering possible links." Advances in Agronomy 137 (...


2

Q What is the truth? That would be nice to know, indeed. But the way this problem is formulated it is way too complex to be answered definitively with simple 'yes' or 'no'. On the one hand, it's a really simple equation of input/output. If the substrate, fertilizer and water are lacking minerals, then the plants will be lacking them as well, as they ...


1

The question about soil depletion with time has been covered in other answers. Currently, in some areas, soil mineral depletion is associated with lower amounts of minerals in plants and with iodine, zinc and selenium deficiency in humans (Annals of Botany, 2010, sow-wu.nl Centre for World Food Studies, 2006). Except in the areas with known mineral ...


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