Disclaimer #1: I am not a doctor or medical researcher. This is just some of what turns up with some cursory skimming of journal abstracts. I have not deeply in

Disclaimer #1: I am not a doctor or medical researcher. This is just some of what turns up with some cursory skimming of journal abstracts. I have not deeply investigated these studies. There are also plenty of studies that were inconclusive or failed to find a link between DDT and this or that health problem. Disclaimer #2: Using DDT to control mosquitos clearly also saves many lives, and almost everyone agrees that it should not be completely discarded in cases where there is no better alternative. But it also shouldn’t be used indiscriminately or treated as benign. Impaired semen quality: https://imedea.uib-csic.es/master/cambioglobal/Modulo_IV_cod101610/articulos/aneck-hahnetal2007%20j%20and.pdf https://imedea.uib-csic.es/master/cambioglobal/Modulo_IV_cod... Low birth weight and small head circumference: https://www.nature.com/articles/pr200749 https://www.nature.com/articles/pr200749 Genital malformation: https://repository.up.ac.za/bitstream/handle/2263/16061/Bornman_DDT%282010%29.pdf?sequence=1 https://repository.up.ac.za/bitstream/handle/2263/16061/Born... Spontaneous abortion: https://pubmed.ncbi.nlm.nih.gov/11557181/ https://pubmed.ncbi.nlm.nih.gov/11557181/ https://www.jstage.jst.go.jp/article/ehpm/8/3/8_3_77/_pdf https://www.jstage.jst.go.jp/article/ehpm/8/3/8_3_77/_pdf Autism: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377859/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377859/ Cognitive problems for young children: https://academic.oup.com/aje/article/164/10/955/162380 https://academic.oup.com/aje/article/164/10/955/162380 Cognitive problems among the elderly: https://www.sciencedirect.com/science/article/pii/S0160412014003250 https://www.sciencedirect.com/science/article/pii/S016041201... Chronic nervous system effects: https://www.sciencedirect.com/science/article/abs/pii/S0140673600042495 https://www.sciencedirect.com/science/article/abs/pii/S01406... https://www.jstage.jst.go.jp/article/indhealth1963/22/3/22_3_199/_pdf https://www.jstage.jst.go.jp/article/indhealth1963/22/3/22_3... Alzheimer’s disease: https://content.iospress.com/articles/journal-of-alzheimers-disease/jad150024 https://content.iospress.com/articles/journal-of-alzheimers-... https://jamanetwork.com/journals/jamaneurology/fullarticle/1816015/?amp=1 https://jamanetwork.com/journals/jamaneurology/fullarticle/1... Impaired thyroid function: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2727265/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2727265/ Breast cancer: https://ehp.niehs.nih.gov/doi/full/10.1289/ehp.10260 https://ehp.niehs.nih.gov/doi/full/10.1289/ehp.10260 https://academic.oup.com/jnci/article/111/8/803/5299924 https://academic.oup.com/jnci/article/111/8/803/5299924 Testicular cancer: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2936455/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2936455/ Pancreatic cancer: https://academic.oup.com/jnci/article-abstract/84/10/764/917384 https://academic.oup.com/jnci/article-abstract/84/10/764/917... Diabetes and hypertension: https://www.sciencedirect.com/science/article/abs/pii/S1438463921001802 https://www.sciencedirect.com/science/article/abs/pii/S14384... https://www.sciencedirect.com/science/article/abs/pii/S0013935106002350 https://www.sciencedirect.com/science/article/abs/pii/S00139... https://link.springer.com/article/10.1007/s11356-014-3371-0 https://link.springer.com/article/10.1007/s11356-014-3371-0 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8477732/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8477732/ There are also a bunch of studies of harmful effects in lab mammals. (And of course it is super toxic to insects and bio-accumulates harming various other animals, notably birds of prey.)