https://unaddicted.ai/ Habit research, every post with its source.en https://unaddicted.ai/posts/is-a-crash-3-93-as-likely-at-08/https://unaddicted.ai/posts/is-a-crash-3-93-as-likely-at-08/ Tue, 27 Oct 2026 03:11:49 +0000 Adjusted for age and sex, crash risk vs no alcohol was 2.07× at a breath level of .05, 3.93× at .08, 5.64× at .10 and 12.18× at .15. Source: Lacey et al., 2016.https://unaddicted.ai/posts/can-a-family-game-add-1-661-steps-a-day/https://unaddicted.ai/posts/can-a-family-game-add-1-661-steps-a-day/ Mon, 26 Oct 2026 19:17:57 +0000 For the first 12, some families also played a game together: points and levels. Source: Patel et al., 2017.https://unaddicted.ai/posts/off-alcohol-can-25-of-34-brain-regions-thicken/https://unaddicted.ai/posts/off-alcohol-can-25-of-34-brain-regions-thicken/ Mon, 26 Oct 2026 03:22:52 +0000 25 of 34 cortex regions grew thicker, 19 changed faster in the first month, and by 7.3 months 24 matched a group of 45 light drinkers. Source: Durazzo et al., 2024.https://unaddicted.ai/posts/same-sugar-fat-and-salt-why-508-more-calories/https://unaddicted.ai/posts/same-sugar-fat-and-salt-why-508-more-calories/ Sun, 25 Oct 2026 19:17:47 +0000 On a mostly ultra-processed menu, people ate 508 more calories a day and gained 0.9 kg. Source: Hall et al., Cell Metabolism, 2019.https://unaddicted.ai/posts/one-pack-a-day-what-does-a-year-cost/https://unaddicted.ai/posts/one-pack-a-day-what-does-a-year-cost/ Sun, 25 Oct 2026 05:37:07 +0000 At the US average of $10.15 a pack, a pack a day costs $3,704.75 a year. Source: Campaign for Tobacco-Free Kids, 2026.https://unaddicted.ai/posts/can-testosterone-rise-17-percent-after-30-years-without-training/https://unaddicted.ai/posts/can-testosterone-rise-17-percent-after-30-years-without-training/ Sun, 25 Oct 2026 04:28:15 +0000 After 12 weeks of training, men around 62 who hadn't exercised in 30 years had about 17% more testosterone. Source: Hayes et al., Endocrine Connections, 2017.https://unaddicted.ai/posts/what-do-3-weeks-of-beer-do-to-testosterone/https://unaddicted.ai/posts/what-do-3-weeks-of-beer-do-to-testosterone/ Sun, 25 Oct 2026 03:27:34 +0000 After 3 weeks of beer with dinner, men's morning testosterone was 6.8% lower. Women's didn't change. Source: Sierksma et al., Alcoholism: Clinical and Experimental Research, 2004.https://unaddicted.ai/posts/can-one-week-of-5-hour-nights-lower-testosterone-10-15-percent/https://unaddicted.ai/posts/can-one-week-of-5-hour-nights-lower-testosterone-10-15-percent/ Sun, 25 Oct 2026 01:01:02 +0000 After a week of 5-hour nights, young men's daytime testosterone fell from 18.4 to 16.5 nmol/L. Source: Leproult & Van Cauter, JAMA, 2011.https://unaddicted.ai/posts/after-cannabis-68-6-percent-felt-ready-to-drive-were-they/https://unaddicted.ai/posts/after-cannabis-68-6-percent-felt-ready-to-drive-were-they/ Sat, 24 Oct 2026 23:07:28 +0000 90 minutes after cannabis, 68.6% said they'd drive. Their driving hadn't improved. Source: Marcotte et al., JAMA Psychiatry, 2022.https://unaddicted.ai/posts/can-more-sleep-mean-270-fewer-calories-a-day/https://unaddicted.ai/posts/can-more-sleep-mean-270-fewer-calories-a-day/ Sat, 24 Oct 2026 21:36:44 +0000 Short sleepers given one sleep-advice session slept 1.2 hours more and ate about 270 fewer calories a day than those who didn't. Source: Tasali et al., JAMA Internal Medicine, 2022.https://unaddicted.ai/posts/can-the-brain-undo-what-smoking-built/https://unaddicted.ai/posts/can-the-brain-undo-what-smoking-built/ Sat, 24 Oct 2026 19:11:47 +0000 A week after stopping, smokers had 22% more nicotine receptors than non-smokers. By 6 to 12 weeks the gap was gone. Source: Cosgrove et al., Archives of General Psychiatry, 2009.https://unaddicted.ai/posts/can-cannabis-lowered-brain-receptors-come-back-in-about-4-weeks/https://unaddicted.ai/posts/can-cannabis-lowered-brain-receptors-come-back-in-about-4-weeks/ Sat, 24 Oct 2026 17:45:33 +0000 After about 4 weeks without cannabis, CB1 receptors were back to normal in most brain regions. Source: Hirvonen et al., Molecular Psychiatry, 2012.https://unaddicted.ai/posts/can-parents-help-a-teen-go-cannabis-free/https://unaddicted.ai/posts/can-parents-help-a-teen-go-cannabis-free/ Sat, 24 Oct 2026 17:23:02 +0000 With rewards for clean tests and a parent plan at home, 50% of teens went 10+ weeks cannabis-free, against 18%. Source: Stanger et al., Drug and Alcohol Dependence, 2009.https://unaddicted.ai/posts/can-cash-help-people-quit-smoking/https://unaddicted.ai/posts/can-cash-help-people-quit-smoking/ Sat, 24 Oct 2026 15:02:18 +0000 With cash for each step, 14.7% had quit smoking at 9 to 12 months, against 5.0% without. Source: Volpp et al., New England Journal of Medicine, 2009.https://unaddicted.ai/posts/what-happens-when-a-whole-countrys-classrooms-go-phone-free/https://unaddicted.ai/posts/what-happens-when-a-whole-countrys-classrooms-go-phone-free/ Sat, 24 Oct 2026 13:16:20 +0000 Half a year after Dutch classrooms went phone-free, 75% of schools with a rule reported better focus. Source: Kohnstamm Instituut & Oberon, 2025.https://unaddicted.ai/posts/can-text-messages-help-teens-quit-vaping/https://unaddicted.ai/posts/can-text-messages-help-teens-quit-vaping/ Sat, 24 Oct 2026 11:09:57 +0000 A coping-skills text program left 37.8% of teens vape-free at 7 months, against 28.0%. Source: Graham et al., JAMA, 2024.https://unaddicted.ai/posts/does-dry-january-last-by-august-4-3-to-3-3-days/https://unaddicted.ai/posts/does-dry-january-last-by-august-4-3-to-3-3-days/ Sat, 24 Oct 2026 08:03:00 +0000 Eight months after Dry January, drinking days averaged 3.3 a week, down from 4.3. Source: University of Sussex (de Visser), 2019.https://unaddicted.ai/posts/does-a-new-habit-really-take-21-days/https://unaddicted.ai/posts/does-a-new-habit-really-take-21-days/ Sat, 24 Oct 2026 05:55:07 +0000 A new daily habit took 66 days on average to feel automatic, and one missed day didn't materially change it. Source: Lally et al., European Journal of Social Psychology, 2010.https://unaddicted.ai/posts/why-is-gambling-harm-about-a-third-lower-here/https://unaddicted.ai/posts/why-is-gambling-harm-about-a-third-lower-here/ Sat, 24 Oct 2026 04:43:00 +0000 Where every gaming machine sits in one casino, gambling harm was about a third lower. Source: Russell et al., Journal of Behavioral Addictions, 2023.https://unaddicted.ai/posts/what-happens-when-your-phone-loses-the-internet/https://unaddicted.ai/posts/what-happens-when-your-phone-loses-the-internet/ Wed, 21 Oct 2026 22:48:47 +0000 With mobile internet blocked for two weeks, daily screen time fell from 314 to 161 minutes. Source: Castelo et al., PNAS Nexus, 2025.