The widespread claims in the nutrition and longevity spaces that there is no safe level of alcohol consumption are total nonsense according to Chris Masterjohn PhD. In conclusion, the optimal dose of alcohol from the totality of the data appears to be in the range of 0.3-0.5 drinks per day, where the risk of total mortality bottoms out.
While there appears to be “no safe amount” for esophageal cancer, community-acquired pneumonia, nonmelanoma skin cancer, breast cancer, squamous cell carcinoma, and liver cirrhosis, the opposite “no unsafe amount except zero” is found for chronic kidney disease, kidney stones, venous thromboembolism, endometrial cancer, and thyroid cancer.
Diabetes, glioma, chronic pain, Alzheimer’s, Parkinson’s, dementia, and H. pylori bottom out around 1 drink per day. Cardiovascular disease bottoms out around 2 drinks per day. Erectile dysfunction stays lowered at up to 3 drinks per day. Depression bottoms out at 0.7 drinks per day.
While these are observational studies and can’t demonstrate cause and effect, cell and animal experiments provide reason to believe alcohol has hormetic effects at low doses mediated by improved activation of vitamin A and increased defense against reactive oxygen species.
A half a drink per day appears to be the average person’s optimal average, given the vast wealth of observational data suggesting total mortality and most disease risks are bottomed out here, and suggesting it is safe for brain volume and beneficial for dementia.
Finally a well-argued advice for alcohol consumption. Watch his enthusiastic video as usual:
youtube.com/watch?v=G4QzEel...
For the written version, with somewhat more technical detail and links to all the references, see
chrismasterjohnphd.substack...
If you only consider Parkinson's disease (PD) when determining the dosage, it appears that 0.3 - 0.5 glass per day is insufficient. As also mentioned by Chris Masterjohn in his video, approximately 2 glasses per day are optimal for PD. This is supported by a meta-analysis suggesting that alcohol consumption is associated with a reduced risk of PD.
ncbi.nlm.nih.gov/pmc/articl...
However, this presents a dilemma. Do you prioritize overall health or aim for a favorable impact on PD? A low dosage of alcohol seems to have a beneficial effect on both lifespan and PD. As a compromise, I opt for 1 glass of red wine, as recommended by the PRO diet by Mischley and the MIND diet. 🍷