Cold feet in a 30 yo male with an unremarkable medical history can be caused by several conditions, including Raynaud's phenomenon, peripheral artery disease PAD, Buerger's disease, hypothyroidism, peripheral neuropathy, and cold agglutinin disease. Your primary care physician can help rule out these conditions.

No come get evaluated.

Need an eval.

Cold feet may be an indication of other conditions. I recommend you discuss with your primary care physician and schedule an appointment with a foot and ankle surgeon(podiatrist) to determine diagnosis and treatment options

Cold feet usually means some sort of circulation issue in your feet. I would always try to wear warm socks such as wool socks. If your toes turn blue or white or red this could be a type of Raynaud's which is bad circulation. Could see a podiatrist about this.

Lower extremities will always be cooler compared to your core body temperature. You may need to wear socks to bed. If this is an uncomfortable feeling for you, then you should see your podiatrist to evaluate your circulation

64 degrees is pretty cold for an inside temperature. It may be too cold in your house and that may be why your feet are cold. Try increasing the heat to 68-70 degrees F and see if that improves. Movement, exercise, and compression stockings can all help with blood circulation. Improving circulation should improve the coldness in your feet. If that doesn't help, you may want to see your doctor to investigate blood pressure, thyroid, or iron status.

Cold toes and feet occur due to circulatory problems-usually arterial in nature. This can be from a congenital problem with circulation, or it can be from atherosclerosis of the arteries of the leg, foot and ankle (even the arteries in the groin). There are also conditions that are related to Vasospasm, such as Raynaud's disease/phenomenon. The best way to find out what is causing the circulatory issue would be to see a cardiologist who specializes in peripheral circulation, or to visit your local Podiatrist for evaluation

If you smoke cigarettes, or have high cholesterol. If these don't apply to you I cannot fully answer your question.

There are a number of reasons for feet feeling cold. This should be evaluated by your podiatrist

If you are concerned about this, then you need to check with either a vascular surgeon or your own primary care doctor to evaluate the circulation in your feet.