Bia
An lorg bia
Tá athrú aiste bia fíor agus tomhaiste. Is é an réimse freisin ina mbíonn an éagsúlacht laistigh de chatagóirí go minic níos mó ná an difríocht idir chatagóirí a deirtear le daoine.
Cad é atá láidir
Suríonn toradh amháin gach argóint mhéadaithe: tá astaíochtaí feola agus uaineacha i bhfad níos airde in aghaidh aonad próitéine ná aon rud eile, go príomha trí mheitine enteric agus úsáid talún. Leanann déiríocht. Tá gach rud eile i bhfad siar.
Deimhníonn athbhreithnithe ar aistí bia a chosnaíonn an comhshaol [4] agus ar phatrún aiste bia a measúnacht go comhoiriúnach maidir le sláinte agus inbhuanaitheacht [1] go bhfuil laghdú ar tháirgí ruminant an leibhéal aiste bia is mó, agus go gcoincíonn sé go ginearálta le moltaí sláinte seachas a bheith ag teacht salach orthu.
Athrú aiste bia agus astaíochtaí
Nuair a bhíonn sé casta
Thíos an leibhéal ruminant, bristear ranguithe simplí. Faigheann measúnacht timthriall saoil ar tháirgí ar leith go mura bhfuil éagsúlacht laistigh de chatagóir níos mó ná éagsúlacht idir chatagóirí — is féidir le táirgeoirí le tionchar íseal a bheith níos mó ná táirgeoirí le tionchar ard.
- Is beag an t-iompar de ghnáth. Tá míle bia ina téarma beag do chuid is mó táirgí; tá modh táirgthe ag ceannaireacht. Is éard atá i dtáirgí a sheoltar ar aer an eisceacht agus is annamh a mhoiltear iad.
- Níl áitiúil go huathoibríoch níos ísle. Is féidir le táirgeadh gloine te in aice láimhe a bheith níos mó ná táirgeadh ar an talamh i bhfad i gcéin le hiompar.
- Is beag an pacáistiú de ghnáth i gcomparáid leis an mbia, agus is féidir leis an tionchar iomlán a laghdú trí chosc a chur ar dramhaíl.
- Is mór an dramhaíl. Tá an bia a chaitear ag iompar a lorg táirgthe iomlán agus ní sholáthraíonn sé aon rud.
- Bíonn séasúrach agus neamh-theachtach níos fearr ná áitiúil. Is é an heuristic úsáideach ná ní ach an modh fáis, ní ach an t-achar.
Lipéad carbóin
Tá lipéad carbóin ar bhia á staidéar, agus tá na torthaí ag freagairt le litríocht lipéadaigh cothaithe a clúdaíodh ar ár suíomh fianaise lipéada bia: cuireann lipéid iompraíocht in oiriúnacht, tá tuiscint éagobhsaí, agus d'fhéadfadh an éifeacht athfhoirmithe ar tháirgeoirí a bheith níos tábhachtaí ná an éifeacht ar an tomhaltóir.
Is é an deacracht bhreise anseo ná go bhfuil figiúr carbóin i bhfad níos lú caighdeánaithe ná figiúr cothaithe. Is féidir le beirt tháirgeoirí figiúirí an-difriúla a ríomh don táirge céanna ag úsáid modhanna cosanta, rud a dhéanann comparáid tras-táirge níos laige ná mar a mholann an lipéad.
Cad a athraíonn iompraíocht
Téann an méadú ar anailís ar idirghníomhachtaí aiste bia bunaithe ar aip [3] agus obair ar aistí bia aireach agus inbhuanaithe [2] i dtreo na n-éifeachtaí beag a bhíonn ann de ghnáth. Cuireann fachtóirí struchtúracha — cad atá ar an gclár, cad atá ar leibhéal súl, cad é an rogha réamhshocraithe — tomhaltas níos iontaofa ná eolas.
Ceisteanna coitianta
An bhfuil orm a bheith vegan?
An bhfuil míle bia tábhachtach?
An bhfuil áitiúil i gcónaí níos fearr?
Cad faoi bainne lacha i gcomparáid le bainne déiríochta?
Tagairtí
Gach tagairt thíos a nascann leis an taifead peer-reviewed bunaidh ar PubMed nó trí DOI. Ní rud ar bith anseo a chuireann comhairle leighis in ionad.
-
Metabolic, adherence, and sustainability outcomes of plant-based low-carbohydrate and ketogenic diets: A systematic review of clinical evidence Mazzola G, Rondanelli M, Cabrini C, et al. · Nutrition (Burbank, Los Angeles County, Calif.) · 2026 · Systematic review DOIPubMed 42048756
-
Mindfulness and sustainable diets: a meta-analysis and CO(2) emission savings scenarios Kosteletzky A, Thomas SM, Jochem C · Nutrition journal · 2026 · Meta-analysis DOIPubMed 42410600Full text
-
The effectiveness of mobile app-based interventions in facilitating behaviour change towards healthier and more sustainable diets: a systematic review and meta-analysis Curtin E, Green R, Brown KA, et al. · The international journal of behavioral nutrition and physical activity · 2025 · Meta-analysis DOIPubMed 41035009Full text
-
Impact of consuming an environmentally protective diet on micronutrients: a systematic literature review Leonard UM, Leydon CL, Arranz E, et al. · The American journal of clinical nutrition · 2024 · Systematic review DOIPubMed 38569787
-
Aligning Environmental Sustainability, Health Outcomes, and Affordability in Diet Quality: A Systematic Review Leydon CL, Leonard UM, McCarthy SN, et al. · Advances in nutrition (Bethesda, Md.) · 2023 · Systematic review DOIPubMed 37532100Full text
-
The Impacts of Dietary Change on Greenhouse Gas Emissions, Land Use, Water Use, and Health: A Systematic Review Aleksandrowicz L, Green R, Joy EJ, et al. · PloS one · 2016 · Systematic review DOIPubMed 27812156Full text
-
Changing the default meal option at university events to reduce harmful environmental impacts: Six randomized controlled trials Zhang AW, Wharton C, Cloonan S, et al. · Appetite · 2024 · Randomised controlled trial DOIPubMed 38908405
-
Ex-ante life cycle assessment of commercial-scale cultivated meat production in 2030 Sinke P, Swartz E, Sanctorum H, et al. · The International Journal of Life Cycle Assessment · 2023 · Journal article DOI
-
The effect of an app-based dietary intervention on diet-related greenhouse gas emissions - results from a randomized controlled trial Pitt S, Sjöblom L, Bälter K, et al. · The international journal of behavioral nutrition and physical activity · 2023 · Randomised controlled trial DOIPubMed 37821876Full text
-
Splanchnic utilization of enteral alanine in humans Battezzati A, Haisch M, Brillon DJ, et al. · Metabolism: clinical and experimental · 1999 · Randomised controlled trial DOIPubMed 10421236
-
Effect of lactic acid isomers on keratinocyte ceramide synthesis, stratum corneum lipid levels and stratum corneum barrier function Rawlings AV, Davies A, Carlomusto M, et al. · Archives of dermatological research · 1996 · Randomised controlled trial DOIPubMed 8818186
-
Consumer perceptions of healthy and sustainable eating Hazley D, Kearney JM · The Proceedings of the Nutrition Society · 2024 · Review DOIPubMed 39233445
-
Moving towards more sustainable diets: Is there potential for a personalised approach in practice? Davies KP, Gibney ER, O'Sullivan AM · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2023 · Review DOIPubMed 37545042
-
A bibliometric review on carbon accounting in social science during 1997-2020 Zheng Y, Yu H, Zhang Y · Environmental science and pollution research international · 2022 · Review DOIPubMed 34853997
-
A taste of the new ReCiPe for life cycle assessment: consequences of the updated impact assessment method on food product LCAs Dekker E, Zijp M, van de Kamp M, et al. · The International Journal of Life Cycle Assessment · 2019 · Journal article DOI
-
Cardiovascular applications of hyperpolarized contrast media and metabolic tracers Bhattacharya P, Ross BD, Bünger R · Experimental biology and medicine (Maywood, N.J.) · 2009 · Review DOIPubMed 19934362
-
Methods for measuring gluconeogenesis in vivo Previs SF, Brunengraber H · Current opinion in clinical nutrition and metabolic care · 1998 · Review DOIPubMed 10565394
-
Life cycle assessment of industrial-scale cultivated meat production: case study of real market entry via pet food application Stieberová B, Žilka M, Bubeníček P, et al. · The International Journal of Life Cycle Assessment · 2026 · Journal article DOI
-
Cradle-to-grave life-cycle assessment of sustainable packaging for dairy products Atkare A, Li M, Saha N, et al. · Sustainable Food Technology · 2026 · Journal article DOI
-
Edible collagen coatings from chicken skin for longer shelf life of meat and dairy food systems Krasulya O, Giro T, Tinambunan D · Foods and Raw Materials · 2026 · Journal article DOI
-
Comparative Life Cycle Assessment of Aquafaba: Applications in the Food and Cosmetic Sectors and Comparison with Conventional Alternatives Rossi E, Bassi G, Cespi D, et al. · Environments · 2026 · Journal article DOI
-
Life cycle sustainability assessment of an agricultural product in rural areas of Western Nepal—case study of goat meat Usva K, Bhattarai I, Abdulkareem M, et al. · The International Journal of Life Cycle Assessment · 2025 · Journal article DOI
-
ISO 14075 and social sustainability: balancing organizational and product approaches in Social Life Cycle Assessment Tsalidis G · The International Journal of Life Cycle Assessment · 2025 · Journal article DOI
-
Decarbonizing Agricultural Buildings: A Life-Cycle Carbon Emissions Assessment of Dairy Barns Liu H, Wang Z, Du X, et al. · Agriculture · 2025 · Journal article DOI
-
Towards an Application of the Life Cycle Assessment Framework for GHG Emissions of the Dairy System: A Literature Review Baker F, Axon S · Land · 2025 · Journal article DOI
-
Plant-Based Diet Indices with Greenhouse Gas Emissions and Risk of Cardiometabolic Diseases and All-Cause Mortality: Longitudinal China Cohort Study Lv Y, Wu M, Liu W, et al. · Nutrients · 2025 · Journal article DOIPubMed 40218910Full text
-
Novel animal product substitutes: A new category of plant‐based alternatives to meat, seafood, egg, and dairy products McClements D · Comprehensive Reviews in Food Science and Food Safety · 2024 · Journal article DOI
-
A comparative nutritional life cycle assessment of processed and unprocessed soy-based meat and milk alternatives including protein quality adjustment Herrmann M, Mehner E, Egger L, et al. · Frontiers in Sustainable Food Systems · 2024 · Journal article DOI
-
Life Cycle Environmental Impacts and Health Effects of Protein-Rich Food as Meat Alternatives: A Review Cellura M, Cusenza M, Longo S, et al. · Sustainability · 2022 · Journal article DOI
-
Evaluating sustainable product alternatives by combining life cycle assessment with full-cost accounting: A highway guardrail case study Scouse A, Kelley S, Venditti R, et al. · BioResources · 2020 · Journal article DOI