--- title: Does very low-dose alcohol reduce anxiety differently after progesterone is removed? description: Yes. Very low doses of alcohol (0.2-0.4 mg/kg) reduced anxiety by 60-70% after progesterone withdrawal, but higher doses (0.8-1.2 g/kg) did not work. url: https://niyora.com/research/papers/effects-of-a-low-dose-of-ethanol-in-an-animal-model-of-premenstrual-anxiety-2004/ --- - [Niyora](https://niyora.com/) - [Research](https://niyora.com/research/) - [Library](https://niyora.com/research/library/) - Does very low-dose alcohol reduce anxiety differently after progesterone is removed? Lab study, 2004 # Does very low-dose alcohol reduce anxiety differently after progesterone is removed? Yes. Very low doses of alcohol (0.2-0.4 mg/kg) reduced anxiety by 60-70% after progesterone withdrawal, but higher doses (0.8-1.2 g/kg) did not work. Early or limited evidence Adult female rats tested after progesterone removal or during a low-hormone natural phase ## What they did Researchers implanted progesterone capsules under the skin of female rats for 21 days, then removed them. After removal, they tested the rats' anxiety using two methods: measuring startle response and using a maze. They tested different doses of alcohol and compared results to control rats. ## What they found Low doses of alcohol (0.2-0.4 mg/kg) produced a 60-70% decrease in startle response in rats that had undergone progesterone withdrawal. Higher doses (0.8-1.2 g/kg) were ineffective in these same animals. Another drug, THIP, at 3 mg/kg produced a similar 70% reduction in startle response after progesterone withdrawal but not in control animals. ## What it means for you Very low alcohol doses might calm anxiety specifically after hormone withdrawal, not through general sedation. This could explain why some women report that alcohol affects their mood differently during the premenstrual phase. The main limits are that this is a rat study modeling one hormone state, and it does not tell us whether this happens in humans with PMS. 21 days progesterone implant duration 0.2-0.4 mg/kg low alcohol dose 60-70% anxiety reduction at low dose ## About the study Original title Effects of a low dose of ethanol in an animal model of premenstrual anxiety Authors Smith SS, Ruderman Y, Hua Gong Q et al. Journal Alcohol (Fayetteville, N.Y.) Year 2004 Study design Lab study What was tested Alcohol at different doses and the drug THIP Open access Yes Read the paper [doi.org/10.1016/j.alcohol.2004.04.003](https://doi.org/10.1016/j.alcohol.2004.04.003) ## Topics [Premenstrual syndrome (PMS)](https://niyora.com/research/topics/condition-pms/)[Anxiety and tension](https://niyora.com/research/topics/symptom-anxiety/) Research tells you what helps on average. Niyora helps on the day it hits. Calm down, see it another way, and decide what to say, with a PMS and PMDD app built by a doctor. ## Related studies Randomised trial, 2026 Does Kundalini Reiki help reduce PMS symptoms and improve quality of life? Randomised trial, 2026 Does calcium and vitamin D supplementation reduce PMS symptoms? Randomised trial, 2026 Does aerobic or resistance exercise reduce anxiety in women with PMS? Systematic review, 2026 Does vitamin D supplementation help PMS symptoms? Systematic review, 2026 Do mindfulness and relaxation techniques help with PMS symptoms? Cohort study, 2025 Do women with PMS or PMDD report lower quality of life than women without these conditions? Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗