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Well, other than all the other negative side effects from drinking including the just-released report that no amount of alcohol is safe, this certainly is a bit of a surprise. FWIW, I didn't have my first beer until 20. And I got MS. I guess that explains everything! 
-D
Alcohol consumption in adolescence is associated with a lower risk of multiple sclerosis in a Danish cohort
Christina Andersen, Helle Bach Søndergaard, Ditte Bang Oturai, ...
First Published August 20, 2018 Research Article
https://doi.org/10.1177/1352458518795418
Abstract
Background and objective:
Due to the possible existence of a vulnerable period of multiple sclerosis (MS) susceptibility in adolescence and because Danish teenagers have a high alcohol consumption, we investigated the association between alcohol consumption at ages 15–19 and the risk of developing MS.
Methods:
A total of 1717 patients with MS and 4685 healthy blood donors filled in a comprehensive environmental and lifestyle questionnaire. Data were analysed by logistic regression models and adjusted for selected confounders.
Results:
We found an inverse association between alcohol consumption in adolescence and risk of developing MS in both women (p < 0.001) and men (p = 0.012). Women with low alcohol consumption had an odds ratio (OR) of 0.56 (95% confidence interval (CI): 0.47–0.66) compared with non-drinking women. The ORs were similar for women with moderate (OR = 0.49, 95% CI: 0.38–0.62) and high consumption (OR = 0.57, 95% CI: 0.38–0.84). Men with low alcohol consumption had an OR of 0.69 (95% CI: 0.53–0.89) compared with non-drinking men but no decreased risk was found for men with moderate and high consumption.
Conclusion:
Alcohol consumption in adolescence was associated with lower risk of developing MS among both sexes.
-DAlcohol consumption in adolescence is associated with a lower risk of multiple sclerosis in a Danish cohort
Christina Andersen, Helle Bach Søndergaard, Ditte Bang Oturai, ...
First Published August 20, 2018 Research Article
https://doi.org/10.1177/1352458518795418
Abstract
Background and objective:
Due to the possible existence of a vulnerable period of multiple sclerosis (MS) susceptibility in adolescence and because Danish teenagers have a high alcohol consumption, we investigated the association between alcohol consumption at ages 15–19 and the risk of developing MS.
Methods:
A total of 1717 patients with MS and 4685 healthy blood donors filled in a comprehensive environmental and lifestyle questionnaire. Data were analysed by logistic regression models and adjusted for selected confounders.
Results:
We found an inverse association between alcohol consumption in adolescence and risk of developing MS in both women (p < 0.001) and men (p = 0.012). Women with low alcohol consumption had an odds ratio (OR) of 0.56 (95% confidence interval (CI): 0.47–0.66) compared with non-drinking women. The ORs were similar for women with moderate (OR = 0.49, 95% CI: 0.38–0.62) and high consumption (OR = 0.57, 95% CI: 0.38–0.84). Men with low alcohol consumption had an OR of 0.69 (95% CI: 0.53–0.89) compared with non-drinking men but no decreased risk was found for men with moderate and high consumption.
Conclusion:
Alcohol consumption in adolescence was associated with lower risk of developing MS among both sexes.
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