Cutting ultra-processed foods was linked to lower depression and anxiety scores in a small clinical trial\u2014but the more useful question for your next grocery trip may be what takes their place.<\/p>\n
The JAMA Psychiatry<\/a> pilot<\/a> offers an encouraging signal, not an established treatment. Nutrition expert Laura Bosman, MSc Nutrition and Health, of the European Food Information Council<\/a>, says replacing those foods can change fiber, vitamins, fats, and calories simultaneously. That makes the replacement food central to understanding the findings.<\/p>\n Related: New Study Links Ultra-Processed Foods to $359,836 in Lifetime Costs, but There\u2019s a Catch<\/a><\/p>\n The Improvement Comes With an Important Limit<\/p>\n Twenty adults with depression enrolled; 19 completed the study. Each followed their usual diet and a low-ultra-processed-food diet for four weeks apiece, in randomly assigned order, according to UCSF<\/a>.<\/p>\n Average PHQ-9 depression scores were 5.53 during the low-UPF period versus 8.68 during the usual-diet period. Anxiety scores were also lower. However, symptom changes were exploratory; the main goal was testing whether participants could manage the dietary change.<\/p>\n \u201cHowever, they knew which diet they were following, so expectations could have influenced how they experienced or reported their symptoms,\u201d Bosman explains to Men\u2019s Journal. \u201cThe study also couldn\u2019t separate reducing UPFs from other changes in what participants ate.\u201d<\/p>\n Related: Scientists Think One Hidden Factor Could Explain Why Some Depression Treatments Fail<\/a><\/p>\n What You Add May Matter<\/p>\n Swapping a packaged snack for nuts or fruit changes nutritional quality alongside processing. This trial couldn\u2019t establish which change explained the mood results.<\/p>\n \u201cThere are several plausible ways diet could influence mood, including through nutrients that support brain function and communication between the gut and brain,\u201d Bosman says.<\/p>\n She points to nutrient roles in brain-cell signaling and the interaction between gut microbes and inflammation. These are possible explanations, not mechanisms demonstrated by this trial. Whether blood-sugar changes contributed also remains unresolved.<\/p>\n Related: Blood Tests May Reveal a Hidden Form of Depression, Psychiatrist Says<\/a><\/p>\n A Practical Place to Start<\/p>\n For adults over 40, the findings support a conversation about overall eating patterns\u2014not a promise of preventing depression or protecting long-term brain health.<\/p>\n \u201cWholegrain bread and some fortified cereals or plant-based drinks can fall into the UPF category while providing valuable nutrients,\u201d Bosman notes.<\/p>\n Start with an achievable addition: beans in a familiar dinner, frozen vegetables alongside lunch, or whole-grain bread. Larger, longer trials must establish whether benefits persist and whether processing matters independently of nutrition.<\/p>\n \u201cImproving diet may therefore support mental health alongside medication or talking therapies, but it cannot replace them,\u201d Bosman says.<\/p>\n The takeaway: Add nourishing foods, and keep established depression care in place.<\/p>\n Related: Scientists Discover Why the Mediterranean Diet May Protect Your Brain and Heart<\/a><\/p>\n This story was originally published by Men’s Journal<\/a> on Nov 4, 2026, where it first appeared in the Nutrition<\/a> section. Add Men’s Journal as a Preferred Source by clicking here.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Cutting ultra-processed foods was linked to lower depression and anxiety scores in a small clinical trial\u2014but the more…\n","protected":false},"author":2,"featured_media":674707,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[103,61,60,410,411],"class_list":["post-674706","post","type-post","status-publish","format-standard","has-post-thumbnail","category-mental-health","tag-health","tag-ie","tag-ireland","tag-mental-health","tag-mentalhealth"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/674706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/comments?post=674706"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/674706\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media\/674707"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media?parent=674706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/categories?post=674706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/tags?post=674706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}