That's interesting, which part of the US is it, and does anyone have hard evidence of that trend?
Only one datapoint, but: the outer half of my eyebrows fell out in 2018 just before my digestive issues flared up and I burned out in the spring of 2019. I wondered if maybe radiation from Fukushima affected my thyroid, since radiation levels in southern Idaho were 80 times normal before they quit reporting them.
I've since made a full recovery, but it took 3 years and endless research where it felt like I was losing my wits at times. I feel now that our health actually comes from our gut, so a multivitamin and a daily low-dose "stress" B vitamin, along with twice the water we think we need, and about 4 times the fiber (in the US at least) and greens mix or fresh leafy vegetables, is critical to maintain health in today's age where so much produce is lacking vitamins and minerals due to depleted soils.
I know several people who went through autoimmune issues around that time and now can no longer eat wheat without consequences like weight gain to severe GI distress. I feel like I developed lactose intolerance, so maybe a toxin got concentrated in milk. It's probably just middle age though.