Depends what your definition of spirituality is! For some people spirituality means religion. To me, it means understanding life.
I was an atheist for a long time, so I can understand where Dawkins etc. are coming from. They're arguing against the religious idea of "god".
Personally I look at everything in terms of energy and consciousness. Things actually makes sense now.
"I think the basic anti-aging diet is also the best diet for prevention and treatment of diabetes, scleroderma, and the various "connective tissue diseases." This would emphasize high protein, low unsaturated fats, low iron, and high antioxidant consumption, with a moderate or low starch consumption.
In practice, this means that a major part of the diet should be milk, cheese, eggs, shellfish, fruits and coconut oil, with vitamin E and salt as the safest supplements."
- Ray Peat