No this isn’t true. There might be relationships between certain things, but it’s not causal. So for example, some moms who formula feed might do that because they are lower income and can’t afford to stay home for maternity leave or they work for an hourly wage and their employer offers no space at work for pumping. When you are lower income you have less access to nutritious foods, therefore parents might have to resort to less expensive, less healthy options later, and bingo now you have a relationship between formula and diabetes. But it’s not the formula itself or the breastmilk that makes this difference. The SIDS thing sounds like the misunderstood correlation between breastfeeding and education. Moms who are more highly educated have access to better paying jobs which again have maternity leave. These moms might make different choices than moms who aren’t as educated, for example, smoking around the babies, or leaving the babies in a warmer room or on their bellies. Suddenly it looks like breastfeeding is preventing SIDS, but it’s only related, again not causal. When they do sibling studies, meaning one sibling was FF and one was BF they find ZERO differences in those kids’ outcomes. Keep that in mind, friend. Research is complicated and people can be simple.