Moderately obese men display different epigenetic marks on their sperm than lean men, and bariatric surgery in massively obese men correlated with changes in sperm methylation. Mary-Elizabeth Patti (Joslin Diabetes Center) is quoted.
If you can’t sign in to your HMS account, try using your existing HarvardKey password for your HMS account. If using your HarvardKey password for your HMS account doesn’t work, reset the password for your HarvardKey account, then use your HarvardKey password to sign in to both accounts.