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Ing tengah-tengahé ana lampu lan papan kanggo wong.
Red Initiative

Ilmu Kedokteran Kesehatan

Teu aya anu bisa eureun jam. Tapi bukti ngeunaan kumaha carana tetep taun-taun sehat langkung kuat tibatan seueur jalma sadar, sareng sebagian ageung éta gratis.

Jumlah wong umur 60 taun lan luwih bakal digandakan antara taun 2020 lan 2050 nganti kira-kira 2.1 миллиард, miturut Organisasi Kesehatan Donya. Hidup langkung lami nyaéta salah sahiji kanikmatan pangluhurna manusa; patarosan ayeuna nyaéta sabaraha taun anu sehat. Sajarah téh mangrupa salah sahiji disiplin ilmu anu ngawengku sagala rupa hal anu aya hubunganana jeung sajarah. Kabèh iki digawé saka rong bahan.

Kenapa kita tuwa

Para panaliti ngajelaskeun penuaan ku cara hiji set tina prosés anu aya hubunganana anu dikenal salaku tanda-tanda penuaan (López-Otín et al., 2023): karusakan DNA, pangénggalna telomere di tungtung kromosom, parobahan kana tanda kimiawi anu nyambungkeun sareng nyambungkeun gen (epigenetika), kaleungitan kontrol kualitas protéin, mitokondria anu rusak, sel anu teu dibagi tapi henteu maot (sel sénescent), sel induk anu kakurangan, komunikasi anu salah antara sel, peradangan kronis tingkat handap, parobihan dina mikrobioma usus sareng daur ulang seluler anu cacad (autophagy). Teu aya anu bisa ngalawan, sabab teu aya anu bisa ngubaran.

Astronaut Scott Kelly collecting a blood sample for NASA's Twins Study.
Dina NASA's Twins Study, astronot Scott Kelly habiskan sataun dina orbit nalika kembar identik na tetep di Bumi, méré panalungtik hiji pandangan langka kana kumaha tanda-tanda awakna anu ngora ngarespon ka stres ekstrim. Sumber: NASA/Scott Kelly

Saben laboratorium iku duwe fungsi sing beda-beda. Studi Twins ti NASA manggihan yén loba parobahan biologis Scott Kelly salami sataun dina orbit, kaasup telomere anu langkung lami nalika terbang, balik kana normal saatos pendaratan, sedengkeun sababaraha parobahan tetep (Garrett-Bakelman et al., 2019). Astronaut ngalaksanakeun latihan sakitar dua jam per dinten pikeun ngajaga tulang sareng otot, jaringan anu sami anu turun kalayan umur di Bumi.

Apa kang ditetepake

Kanyataan ieu dibuktikeun ku sababaraha studi observasional anu ngawengku ratusan jalma. Éta mangrupikeun dasar pikeun panduan kesehatan publik di sakumna dunya.

Aktivitas fisik. Organisasi Kaséhatan Dunya nyarankeun yén jalma dewasa kedah ngalakukeun 150 dugi ka 300 menit kagiatan anu moderat, atanapi 75 dugi ka 150 menit kagiatan anu kuat, unggal minggu, ditambah kagiatan ngaronjatkeun otot dina dua atanapi langkung dinten. Kabiasaan anu paling umum nyaéta ngalaksanakeun latihan saminggu sakali atawa dua kali sapoé. Regular activity is linked to lower risk of heart disease, stroke, type 2 diabetes, several cancers, depression and dementia (WHO, 2020).

Kekuatan. Kaséhatan fisik sarta mental (fisik, psikologis, sareng spiritual) mangrupikeun faktor anu penting pikeun kasalametan. Resistance training preserves muscle and bone at any age, including in people over 90.

Ora merokok. Merokok tetep dadi salah sawijining sebab utama kematian dini sing bisa dicegah. People who stop before about age 40 avoid more than 90 percent of the excess risk of death caused by continuing to smoke (Jha et al., 2013). Ing jaman saiki, ora ana sing bisa mbantu.

Tekanan getih. Tekanan getih luhur ngabahayakeun pembuluh darah dina jantung, otak, jeung ginjal, sering tanpa gejala. Dina uji SPRINT, kontrol tekanan getih intensif ngirangan kajadian kardiovaskular sareng maotna, sareng ngirangan cacad kognitif anu saeutik (SPRINT MIND, 2019). Tekanan getih diukur ing detik lan diobati kanthi murah.

Alkohol Alkohol bisa nyebabake kanker lan akeh penyakit liyane. WHO nyatakeun yén teu aya tingkat nginum anu aman pikeun kaséhatan; kirang langkung langkung saé.

Sleep. Adults are advised to sleep at least seven hours a night regularly (Watson et al., 2015). Kasakit jantung anu disababkeun ku inféksi virus, nyaéta panyakit jantung akut, sarta panyakit jantung kronis.

Diet patterns. Diets rich in vegetables, fruit, whole grains, legumes, nuts and olive oil, with little processed meat and sugar, are linked to lower risk of heart disease. In the PREDIMED trial, a Mediterranean diet supplemented with olive oil or nuts reduced major cardiovascular events by about 30 percent compared with a reduced-fat diet (Estruch et al., 2018).

Social connection. Loneliness and isolation are linked to earlier death: a large meta-analysis found about 50 percent greater likelihood of survival for people with stronger social relationships (Holt-Lunstad et al., 2010).

Kabèh iku bisa diwaca lan didengar. Kakurangan pendengaran nyaéta faktor résiko tunggal anu paling ageung pikeun dementia anu diidentipikasi ku Komisi Lancet. In the ACHIEVE trial, a hearing intervention slowed cognitive decline by about 48 percent over three years among older adults at higher risk (Lin et al., 2023). Kaleungitan visi anu teu dirawat ditambahkeun minangka faktor résiko dina taun 2024.

Vaksinasi. Vaksin ngajaga jalma-jalma anu langkung lami tina flu, pneumonia, shigellosis, sareng COVID-19, panyakit anu paling parah mangaruhan aranjeunna. A natural experiment in Wales found that shingles vaccination was followed by about a 20 percent lower chance of a dementia diagnosis over seven years (Eyting et al., 2025); researchers are investigating why.

Kabèh iku kanggo tujuan pendidikan. Pendidikan awal dina kahirupan, sarta kagiatan mental jeung sosial anu dipikaresep saterusna, aya hubunganana sareng résiko dementia anu langkung handap sareng kasehatan anu langkung saé.

45%of dementia cases linked to 14 modifiable risk factors (Lancet Commission, 2024)
2.1 billionpeople aged 60 or over expected by 2050 (WHO)
150 to 300minutes of moderate activity a week recommended for adults (WHO)

Intervensi pangpanjangna anu paling kuat anu pernah diuji henteu ngabutuhkeun biaya: gerak, tidur, henteu merokok sareng tetep nyambung.

Astronaut Sandra Magnus exercising on the station's treadmill.
Di orbit, tulang jeung otot leungit gancang tanpa latihan sapopoé, ngagambarkeun kaleungitan umur di Bumi kalayan laju anu luhur. Sumber: NASA

Frontier riset

Panalungtikan ngeunaan biologi kabogohan terus maju, sareng judulna sering ngaleuwihan bukti. Di handap ieu nyaéta widang panalungtikan aktif. Tidak aya anu dibuktikeun ngaleuwihan umur manusa, sababaraha nyababkeun résiko nyata, sareng sababaraha ubar resep kalayan efek samping. Nanging, para ahli ora bisa nerangaké apa tegesé.

  • Kalori iku siji unit. Kajaba iku, konsumsi daging tanpa lemak bisa ngurangi risiko kanker payudara. In the CALERIE 2 trial in healthy adults, two years of moderate restriction improved cardiometabolic risk factors (Kraus et al., 2019) and slightly slowed a measure of the pace of biological ageing (Waziry et al., 2023). Ing jaman biyèn, ora ana sing ngerti apa tegesé “kabeh” iku.
  • GLP-1 medicines. Drugs such as semaglutide, developed for diabetes and obesity, reduced major cardiovascular events by 20 percent in people with obesity and heart disease in the SELECT trial (Lincoff et al., 2023). Ing basa Inggris, istilah iki bisa dijupuk saka tembung “promise” (amarga) lan “proof” (kanggo).
  • Metformin. A diabetes drug linked in observational studies to lower rates of some age-related diseases. Ing jaman biyèn, wong-wong wis bisa nganggep manawa anané manungsa iku ora bisa diukur kanthi cara empiris.
  • Rapi. Nganggo umur dawa ing témbok, malah nalika wiwitan pungkasan urip (Diarsip saka sing asli ing 2009.). Ing basa Inggris, istilah iki bisa dijupuk saka tembung “experimental” (eksperimen) lan “test” (tes).
  • Seniman. Kauntungan tina konsumsi obat-obatan ieu nyaéta bisa ngurangan tingkat karusakan jaringan anu disababkeun ku panyakit. Kabèh iku bisa digawé kanthi cara: *Eksperimen.
  • Dhèwèké dadi Présidhèn. Kajaba iku, anané racun ing getih bisa nyebabake kerusakan jaringan lan organ-organ sing ora bisa diatasi kanthi cara liya.
  • Epigenetic clocks. Measurements of chemical marks on DNA that estimate “biological age” (Horvath, 2013). Kajaba iku, ana uga sing ora bisa diukur kanthi cara iki. *Kanggo data statistik, deleng tabel ing ngisor iki.
  • Partial reprogramming. Briefly switching on genes that reset cells towards a younger state reversed signs of ageing in mice (Ocampo et al., 2016). Kajaba iku, ana uga kang diarani kanker kulit. *Kanker kulit punika penyakit ingkang dipunsebabaken déning virus.

Carane sampeyan bisa nulungi aku

  • Geuningkeun deui, mimiti dinten ayeuna, sarta tambahkeun latihan kakuatan jeung kasaimbangan. Kabèh iku dipérang dadi rong golongan: aktivitas lan interaksi.
  • Kanggo ngukur tekanan getih, mangga konsultasi ka dokter. Coba cek tekanan darah anjeun sareng tindakkeun saran anu ditawarkeun ku dokter.
  • Uji kamampuan pamahaman jeung pangrasa anjeun, sarta dorong kolot sareng bibi-bibi pikeun ngalakukeunana ogé. Kacamata sareng alat bantu dengar mangrupikeun salah sahiji perlindungan paling sederhana pikeun otak.
  • Tetep nyambung. Telpon ka jalma anu teu dipikawanoh; ngaundang tetangga nu teu dipikawanoh kana hiji hal.
  • Protéksi tidur: jadwal anu rutin sareng kamar tidur anu hideung, tiis, dimana Light Initiative ngahijikeun kaséhatan.
  • Ayo ragu-ragu karo klaim mukjizat, lan bagikeun kaca iki nalika sampeyan ningali salah sahiji.
  • Mangga pitulung supaya kaca iki tetep akurat. Panaliti, dokter lan penerjemah bisa dadi sukarelawan ing board kontribusi.

Sumber lan maca luwih lanjut